MasterLine Zip Bag – Practical Filter Media Bag for Optimal Water Circulation Key Features: Plastic zipper – rustproof and durable Ultra-fine, robust material (250 microns) for ideal water circulation Reinforced seams prevent media from escaping Resistant to acids and chlorine, reusable multiple times Perfect for use with MasterLine Purity and other filter media Product Description: The MasterLine Zip Bag is the ideal companion for using loose filter media such as MasterLine Purity in your aquarium filter. Its ultra-fine synthetic mesh (250 microns) ensures optimal water circulation, while reinforced seams reliably prevent any media from escaping. The zipper is made entirely of plastic, making it durable and easy to use—even with frequent exposure to water and cleaning agents. The bag remains flat and holds its shape, ensuring even flow-through. It is resistant to chlorine and acids, allowing for safe regeneration. Available in two sizes: • Size S – fits approx. 250?ml of filter media • Size L – fits approx. 500?ml of filter media An easy, clean, and efficient solution for freshwater and marine aquarium filtration.

MasterLine All In One Boost – Complete Fertilizer for Vigorous Plant Growth Key Features: All micro- and macronutrients in a single bottle Noticeably accelerates plant growth Suitable for daily or weekly dosing Especially suited for Dutch style & densely planted tanks Safe for all aquarium inhabitants, including shrimp Includes measuring cup (2.5–20 ml) Product Description: MasterLine All In One Boost is a convenient all-in-one fertilizer for aquarists who want to nourish their aquarium plants simply and effectively. With just one bottle, you get a perfectly balanced mix of micro- and macronutrients that promotes strong and sustained plant growth. The stable nutrient formula ensures faster growth rates and more robust plants—ideal for Dutch-style aquariums and densely planted layouts. All In One Boost is suitable for both daily and weekly dosing, making it easy to maintain with just one product. Safe for all aquarium inhabitants, including sensitive shrimp, and perfectly compatible with MasterLine Carbo for even better results. For optimal conditions, a weekly water change of 30–50% is recommended. MasterLine All In One Boost is the ideal solution for aquarists who want healthy, thriving plants in a low-maintenance system.

MasterLine Spring Cut – Precision Scissors for Aquarium Plants Key Features: Perfect for precise trimming, even in hard-to-reach areas Polished, durable stainless steel Ergonomic design – lightweight and comfortable Automatic spring-back mechanism Non-slip, textured grip area Can be operated with 3 fingers for maximum control Product Description: The MasterLine Spring Cut is a specially designed precision scissor for professional trimming of aquarium plants. Its ergonomic shape and lightweight construction make even extended maintenance sessions comfortable and fatigue-free. The textured grip ensures a firm hold, while the automatic spring-back after each cut provides especially convenient handling. Ideal for fine and targeted cuts, even in dense or hard-to-reach planting zones. The high-quality stainless steel construction ensures durability and a long-lasting sharp cutting edge. An indispensable tool for all aquascapers and aquarium enthusiasts who value well-maintained, healthy plants.

MasterLine Wave – Curved Scissors for Comfortable Aquarium Plant Trimming Key Features: Specially rounded, wave-shaped tip Ergonomic design, lightweight High-quality polished stainless steel Ideal for ground covers, mosses, and all aquarium plants Rounded grip surfaces for comfortable handling Large blade opening for trimming multiple stems at once Product Description: The MasterLine Wave is an ergonomically shaped aquascaping scissor featuring a more curved tip and wave-shaped profile. It’s perfectly suited for trimming ground cover plants, mosses, and other aquarium flora, allowing for smooth and controlled cuts even in hard-to-reach areas. Made of high-quality polished stainless steel, the scissors feel light and secure in the hand. Softly rounded grip surfaces prevent pressure points and reduce fatigue during longer trimming sessions. The extra-wide blade opening also enables cutting several stems at once, making plant maintenance significantly more efficient. A perfect tool for aquascapers and plant enthusiasts who value precision and comfort.

MasterLine Iron – Highly Stabilized Iron for Intense Plant Coloration Key Features: Highly stable iron source (Fe chelated with DTPA) Allows precise control of iron dosing Corrects iron deficiencies and enhances leaf coloration Does not react with phosphate in the water Suitable for daily or weekly dosing Safe for all aquarium inhabitants, including shrimp Includes measuring cup (2.5–20 ml) Product Description: MasterLine Iron is a highly effective iron fertilizer designed specifically for aquarium plants, enabling targeted supplementation of iron within the nutrient system. The iron is chelated with DTPA, making it stable and bioavailable even at higher pH levels and in the presence of phosphate. Iron deficiency often appears as pale or yellowing leaves—MasterLine Iron effectively corrects this, while also enhancing pigmentation for deeper, more vibrant leaf coloration. Its separate dosing allows for precise adjustment of iron levels based on plant needs. Ideal for use with MasterLine individual components or as an addition to existing fertilization systems. Dosage: As needed, recommended: 1?ml per 30?litres ? 0.1?ppm Fe Target level: at least 0.05–0.1?ppm Fe in the water For best results, avoid using UV lamps or adjust the dosage accordingly. MasterLine Iron is safe for all aquarium inhabitants and supports strong, healthy plant growth.

MasterLine Root Caps – Nutrient Capsules for Healthy Plant Roots Key Features: Slow release of micro- and macronutrients Revitalizes depleted soil and activates inert substrate Promotes healthy root development and vigorous plant growth Safe for all aquarium inhabitants, including shrimp Does not affect water quality Product Description: MasterLine Root Caps are specially formulated fertilizer capsules designed to provide targeted nourishment to plant roots in aquariums. They gradually release essential micro- and macronutrients to support the development of a strong, healthy root system. Particularly effective in reactivating depleted soil substrates or enhancing inert gravel, these capsules also release ammonium as a gentle nitrogen source, which significantly promotes root growth. MasterLine Root Caps are completely safe for all aquarium inhabitants, including sensitive species like shrimp. For best results, use in combination with MasterLine liquid fertilizers. The capsules should be inserted deep into the substrate near plant roots using tweezers, where they will provide long-lasting effects over several weeks. Ideal for demanding plant species and maintaining a stable, thriving planted aquarium.

MasterLine Nitrate – Highly Stable Nitrate & Potassium Source for Optimal Plant Growth Key Features: Contains nitrate (NO3) and potassium (K) Allows precise control of nitrate levels Corrects nitrate deficiency and helps prevent algae growth Promotes fast and healthy plant development Suitable for daily or weekly dosing Safe for all aquarium inhabitants, including shrimp Includes measuring cup (2.5–20 ml) Product Description: MasterLine Nitrate provides stably bound nitrate (NO3) and potassium (K)—two essential macronutrients for the healthy growth of aquatic plants. In well-planted tanks or in systems with strong denitrification, nitrate levels can drop quickly, causing plant growth to stagnate. By applying MasterLine Nitrate as needed, nitrate levels remain stable, supporting vigorous plant growth while also helping to prevent algae. Healthy plants outcompete algae by removing excess nutrients from the water. The product enables independent control of NO3 levels and works perfectly in combination with other MasterLine components or as a supplement to existing fertilization routines. Dosage: Daily or weekly application Target: Keep nitrate levels above 5 ppm Note: Due to biological processes such as denitrification, nitrate levels in aquariums can drop significantly. Regular testing and re-dosing are therefore recommended. MasterLine Nitrate is safe for all aquarium inhabitants and plays a key role in supporting vibrant, healthy plant growth.

MasterLine Dosing Pump – Precision Dosing Pump for Liquid Fertilizers Key Features: Accurate dosing: 1.2?ml or 5?ml per full pump 50% dosage possible with a half pump stroke Reusable – no need to repurchase when changing bottles Compatible with 200?ml, 500?ml, and 1000?ml MasterLine bottles Lockable by turning the pump head Product Description: The MasterLine Dosing Pump allows for precise, easy, and convenient dosing of all MasterLine liquid fertilizers. With each full pump stroke, it dispenses exactly 1.2?ml or 5?ml of liquid, and half a stroke delivers 50% of the standard dose effortlessly. The pump is compatible with all standard MasterLine bottle sizes (200?ml, 500?ml, and 1000?ml) and can be reused after a bottle is emptied—no need to purchase a new one. For optimal leak protection, the pump head can be locked simply by turning it. This makes the Dosing Pump perfect for daily use, ensuring clean, accurate dosing with zero waste. Easy to clean and maintain, it offers long-lasting durability and consistent performance. Ideal for aquarists who want to fertilize their plants professionally and efficiently.

MasterLine Crystal Clear – For Crystal-Clear Aquarium Water Key Features: Effectively clears water by binding the finest particles Increases oxygen levels and enhances pearling effect Effective against cloudy water and organic residues Safe for all aquarium inhabitants, including shrimp Visible results within 6–12 hours Easy dosing with integrated measuring cap Product Description: MasterLine Crystal Clear is a highly effective water clarifier for freshwater aquariums that binds even the finest organic particles responsible for cloudy or milky water. Shortly after application, a temporary cloudiness may appear, which fully clears within 6 to 12 hours—leaving your aquarium visibly cleaner and more brilliant. Crystal Clear also improves oxygen levels in the tank and enhances the pearling effect in aquatic plants. For best results, it should be added in well-circulated areas and only if carbonate hardness (KH) is above 2 °dH. Regular filter maintenance and gravel vacuuming are recommended to maximize its effectiveness. When used as directed, Crystal Clear is safe for fish, shrimp, and plants. Ideal for anyone aiming for a sparkling clean and crystal-clear aquarium.

MasterLine Tweez – Precision Tweezers for Aquascaping and Plant Care Key Features: Suitable for all plant types: thin & thick stems, ground covers Made from high-quality polished stainless steel Fine tip with internal grooves for optimal grip High pressure point allows planting of multiple stems at once Ergonomic design, lightweight Ideal for all substrates, even coarse gravel Product Description: The MasterLine Tweez is a premium aquascaping tweezer specially designed for precise planting and arranging of aquarium plants. Its fine tip with internal grooves provides a secure grip, making it easy to handle delicate ground covers as well as thicker stem plants with precision. Thanks to its high pressure point, you can even plant multiple stems at once, significantly speeding up aquarium work. The ergonomic design and lightweight construction ensure comfortable handling, even during extended use. These tweezers work flawlessly in all types of substrates—even challenging ones like coarse gravel—where planting can otherwise be difficult. An essential tool for aquascapers, plant enthusiasts, and anyone looking to shape their underwater landscape with precision.

MasterLine Wave – Curved Scissors for Comfortable Aquarium Plant Trimming Key Features: Specially rounded, wave-shaped tip Ergonomic design, lightweight High-quality polished stainless steel Ideal for ground covers, mosses, and all aquarium plants Rounded grip surfaces for comfortable handling Large blade opening for trimming multiple stems at once Product Description: The MasterLine Wave is an ergonomically shaped aquascaping scissor featuring a more curved tip and wave-shaped profile. It’s perfectly suited for trimming ground cover plants, mosses, and other aquarium flora, allowing for smooth and controlled cuts even in hard-to-reach areas. Made of high-quality polished stainless steel, the scissors feel light and secure in the hand. Softly rounded grip surfaces prevent pressure points and reduce fatigue during longer trimming sessions. The extra-wide blade opening also enables cutting several stems at once, making plant maintenance significantly more efficient. A perfect tool for aquascapers and plant enthusiasts who value precision and comfort.

MasterLine Carbo – Liquid Carbon Source for Healthy Plant Growth & Reduced Algae Key Features: Liquid plant-based carbon – ideal CO2 alternative For daily dosing only Promotes healthy, vigorous plant growth and reduces algae Quickly and easily absorbed by plants Does not affect pH levels Safe for all aquarium inhabitants, including shrimp Includes measuring cup (2.5–20?ml) Product Description: MasterLine Carbo is a powerful liquid carbon source for aquarium plants and the perfect alternative to pressurized CO2 systems. The bioavailable carbon is absorbed directly by plants, promoting healthy, vigorous growth. At the same time, MasterLine Carbo helps significantly reduce algae and supports a stable biological balance in the aquarium. Application is simple: dose daily into well-circulated areas—either as the sole carbon source or in combination with a CO2 system. MasterLine Carbo does not affect pH levels and is completely safe for fish, shrimp, and other aquarium inhabitants. For best results, use alongside MasterLine I and II or a MasterLine All-in-One fertilizer. This ensures perfectly balanced nutrient supply and long-term algae-free, vibrant plant growth.

MasterLine Potassium – Highly Concentrated Potassium Source for Healthy Aquarium Plants Key Features: Provides pure potassium (K), without nitrate or phosphate Allows for precise control of potassium levels Prevents potassium deficiency and related symptoms Supports activation of plant enzymes and cell growth Protects older leaves from deterioration and loss Suitable for daily or weekly dosing Safe for all aquarium inhabitants, including shrimp Includes measuring cup (2.5–20 ml) Product Description: MasterLine Potassium is a highly stable potassium solution developed specifically for targeted potassium supplementation in aquariums. Potassium is an essential macronutrient required by plants to activate numerous enzymes and to maintain proper cellular function. Potassium deficiency often manifests as yellowing or perforated leaves, negatively affecting plant growth and resilience. MasterLine Potassium enables precise control of potassium levels—without introducing nitrate or phosphate into the tank. This product is an excellent supplement to other MasterLine single components or can be used to boost potassium in existing fertilization systems. Dosage Recommendation: Do not let the potassium level fall below 15 ppm in the aquarium. MasterLine Potassium is completely safe for all aquarium inhabitants, including shrimp, and plays a key role in promoting strong plant growth and stable water quality.

MasterLine FilterMAX – Effective Biological Filtration for Aquariums Key Features: Supports the breakdown of ammonia and nitrite by nitrifying bacteria 100% natural, reusable filter media Suitable for both freshwater and saltwater Maximizes filter volume usage without restricting water flow Compatible with any filter system thanks to 6–12 mm granule size Product Description: MasterLine FilterMAX is a highly porous, natural filter media that provides an ideal environment for nitrifying bacteria to effectively break down harmful substances like ammonia and nitrite. This biological filtration medium is perfect for use in both freshwater and saltwater aquariums and is reusable, meaning it doesn’t need to be replaced. With a granule size of 6–12 mm, FilterMAX is compatible with any filter system and maximizes the use of filter volume without restricting water flow. Its shape and high porosity promote optimal colonization by beneficial bacteria. Before first use, rinse FilterMAX thoroughly with water to remove fine dust. Ideally, place it directly after the mechanical filtration stage in your filter. One liter of FilterMAX is sufficient for a 100-liter aquarium. For faster bacterial colonization, squeeze an already colonized sponge into the aquarium and let the filter absorb the water. To minimize bacterial loss, do not leave the filter turned off for more than 5–6 hours during a reset. Clean the filter media regularly by servicing the external filter every 3–6 months. In cases of denitrification or low NO3 levels, more frequent cleaning is recommended. With MasterLine FilterMAX, you get a biological filter medium that provides a large surface area for beneficial bacteria and helps maintain the ecological balance of your aquarium.

MasterLine All In One LEAN – For More Intense Colors & Controlled Growth Key Features: Enhances the red coloration of aquarium plants Promotes slower, more controlled plant growth Complete fertilizer with micro- and macronutrients Ideal for competition tanks & high-end aquascapes Supports enhanced root-based nutrient uptake Safe for fish, shrimp, and all other aquarium inhabitants Easy dosing with a single bottle Product Description: MasterLine All In One LEAN was specially developed for aquarists with the highest aesthetic standards, aiming to achieve more vivid coloration—particularly in red plant species. Its balanced, lean nutrient formula provides all essential micro- and macronutrients, specifically promoting enhanced pigmentation and encouraging slower, more compact plant growth—ideal for competition-grade aquariums, layout-focused aquascapes, or tanks with low plant biomass. By stimulating nutrient uptake through the roots, this fertilizer also contributes to better plant stability and stronger root development. MasterLine All In One LEAN is safe for all aquarium inhabitants—from fish and shrimp to sensitive species—and allows for convenient care using just one bottle. For best results, use in combination with MasterLine Carbo. Perfect for aquarists who prioritize vibrant coloration, precise control, and exceptional visual quality in their planted aquariums.

MasterLine GH Plus – Minerals for Optimal Growth Key Features: 100% soluble salts for remineralizing RO water and soft water Increases general hardness (GH) without affecting carbonate hardness (KH) Promotes the growth of aquatic plants and animals Adds calcium and magnesium in a 4:1 ratio, plus potassium Contains essential minerals for Caridina shrimp and fish Compatible with all aquatic life Product Description: MasterLine GH Plus is a blend of 100% soluble salts, specially formulated to remineralize reverse osmosis (RO) water and soft water with a general hardness of less than 6 dGH. This product increases GH specifically without affecting KH, which is essential for many aquarium inhabitants. By adding calcium and magnesium in the ideal 4:1 ratio, along with a small amount of potassium, MasterLine GH Plus promotes healthy plant growth and supports the well-being of fish and Caridina shrimp by providing essential minerals. One measuring spoon (approx. 3 grams) per 15 liters of water increases general hardness by 6 dGH. A measuring spoon is included. For quick dissolution, gradually add the salts to a container of water while stirring vigorously, then carefully pour the solution into the aquarium. To maintain quality, keep the container tightly sealed after use and store at room temperature. Avoid moisture, direct light, heat, and frost. MasterLine GH Plus is intended for aquarium use only.

MasterLine Tweez – Precision Tweezers for Aquascaping and Plant Care Key Features: Suitable for all plant types: thin & thick stems, ground covers Made from high-quality polished stainless steel Fine tip with internal grooves for optimal grip High pressure point allows planting of multiple stems at once Ergonomic design, lightweight Ideal for all substrates, even coarse gravel Product Description: The MasterLine Tweez is a premium aquascaping tweezer specially designed for precise planting and arranging of aquarium plants. Its fine tip with internal grooves provides a secure grip, making it easy to handle delicate ground covers as well as thicker stem plants with precision. Thanks to its high pressure point, you can even plant multiple stems at once, significantly speeding up aquarium work. The ergonomic design and lightweight construction ensure comfortable handling, even during extended use. These tweezers work flawlessly in all types of substrates—even challenging ones like coarse gravel—where planting can otherwise be difficult. An essential tool for aquascapers, plant enthusiasts, and anyone looking to shape their underwater landscape with precision.

MasterLine I – High-Concentration Micronutrient Fertilizer Key Features: Highly concentrated micronutrient formula Separate dosing of micro- and macronutrients Ideal for densely planted aquariums (Dutch style) Promotes accelerated plant growth Suitable for daily or weekly dosing Safe for all aquarium inhabitants, including shrimp Includes measuring cup (2.5–20?ml) Product Description: MasterLine I is a powerful micronutrient fertilizer that delivers all essential trace elements needed for optimal plant growth in your aquarium. Thanks to its highly concentrated formula, MasterLine I allows for separate control of micro- and macronutrient dosing, which is especially beneficial in Dutch-style aquariums with heavy plant load. The balanced mix of iron, manganese, zinc, boron, copper, and molybdenum promotes faster growth rates and ensures healthy, vibrant plants. This makes fertilizing more flexible and precise—ideal for demanding aquascaping setups. MasterLine I is suitable for daily or weekly use, is completely safe for all aquarium inhabitants, and works perfectly in combination with MasterLine Carbo. Dosage: • Daily: 1?ml per 30?litres (1?ml ˜ 0.07?ppm Fe) For best results, a weekly water change of 30–50% is recommended. UV lamps should be avoided or dosing adjusted accordingly. MasterLine I is the perfect choice for aquarists who want to provide their plants with targeted micronutrient care to enhance the beauty and vitality of their aquarium.

MasterLine Phosphate – Highly Stable Phosphate & Potassium Source for Optimal Plant Growth Key Features: Provides phosphate (PO4) and potassium (K) Enables separate control of phosphate levels in the aquarium Supports fast plant growth and stable water parameters Helps prevent algae growth with targeted dosing Suitable for daily or weekly dosing Safe for all aquarium inhabitants, including shrimp Includes measuring cup (2.5–20 ml) Product Description: MasterLine Phosphate provides aquatic plants with a targeted supply of phosphate (PO4) and potassium (K)—two essential nutrients for vigorous and healthy growth. In heavily planted or nutrient-poor aquariums, phosphate deficiency can occur quickly, hindering plant growth and disrupting the biological balance. With MasterLine Phosphate, phosphate levels can be precisely adjusted, supporting steady plant growth and acting as a natural deterrent to algae. Its highly stable formula allows for easy daily or weekly dosing and is the perfect complement to other MasterLine single components or existing fertilization systems. Dosage Recommendation: In tanks with inert substrate, PO4 should never drop below 0.2 ppm. In active soil setups, levels of 0.1–0.2 ppm in the water are often sufficient due to substrate buffering. MasterLine Phosphate is completely safe for all aquarium inhabitants, including sensitive species such as shrimp, and plays a vital role in supporting strong plant growth and maintaining clear, stable water quality.

MasterLine RootMAX – Organic Fertilizer for Aquarium Plants Key Features: Organic fertilizer in pellet form Inoculated with microorganisms for gradual nutrient release Effective for 6–12 months Converts inert substrate into nutrient-rich soil 100% natural ingredients, safe for all aquatic life Product Description: MasterLine RootMAX is an organic fertilizer in pellet form, specially developed for ornamental plants in aquariums. The pellets are colonized by microorganisms that enable the gradual release of micro- and macronutrients, amino acids, humic and fulvic acids, hormones, enzymes, and vitamins. These nutrients are easily absorbed by the roots and support healthy plant growth for a period of 6–12 months. RootMAX transforms inert or nutrient-poor substrates into nutrient-rich soil that is ideal for growing aquarium plants. The product is made from 100% natural ingredients and is safe for all aquatic life, including shrimp. To use RootMAX, distribute the pellets evenly on the bottom of the aquarium and cover them with at least 4–5 cm of substrate. For more demanding plants, place 3–4 pellets directly under the roots using tweezers. It is recommended to use RootMAX in combination with a MasterLine liquid fertilizer in aquariums with Aquasoil or other inert substrates. Store the product at room temperature and protect it from direct light, heat, and frost. RootMAX is intended for aquarium use only.

MasterLine Spring Cut – Precision Scissors for Aquarium Plants Key Features: Perfect for precise trimming, even in hard-to-reach areas Polished, durable stainless steel Ergonomic design – lightweight and comfortable Automatic spring-back mechanism Non-slip, textured grip area Can be operated with 3 fingers for maximum control Product Description: The MasterLine Spring Cut is a specially designed precision scissor for professional trimming of aquarium plants. Its ergonomic shape and lightweight construction make even extended maintenance sessions comfortable and fatigue-free. The textured grip ensures a firm hold, while the automatic spring-back after each cut provides especially convenient handling. Ideal for fine and targeted cuts, even in dense or hard-to-reach planting zones. The high-quality stainless steel construction ensures durability and a long-lasting sharp cutting edge. An indispensable tool for all aquascapers and aquarium enthusiasts who value well-maintained, healthy plants.

MasterLine All In One GOLDEN – Premium All-in-One Fertilizer for Demanding Aquarium Plants Key Features: Specifically formulated for high-demand plants Complete fertilizer with micro- and macronutrients in various forms Promotes moderate growth and strong root development Supports sturdy stems and large, healthy leaves Suitable for all aquarium plants Convenient dosing with just one bottle Safe for all aquarium inhabitants, including shrimp Product Description: MasterLine All In One GOLDEN is a specially formulated premium all-in-one fertilizer for demanding aquarium plants. It combines all essential micro- and macronutrients in various highly bioavailable forms, ensuring balanced and healthy nutrient uptake. Designed for medium to high-demand plant species, this fertilizer supports not only steady and moderate growth but also encourages the development of strong root systems, thick stems, and broad, vibrant leaves. MasterLine All In One GOLDEN is perfectly suited for all types of planted aquariums, offering a convenient and reliable fertilization method with just one bottle. It is completely safe for all aquarium inhabitants, including sensitive species like shrimp. Recommended Usage: • For best results, use in combination with MasterLine Carbo • Avoid UV lamps if possible, or adjust dosage accordingly • After water changes over 50%, apply triple the regular dose MasterLine All In One GOLDEN is the perfect solution for aquarists who want to provide optimal care for demanding plants while keeping aquarium maintenance simple and effective.

MasterLine Purity (500?ml) – For Crystal-Clear and Healthy Aquarium Water Key Features: Highly effective filter media for removing even the finest organic impurities Supports biological filtration and increases oxygen concentration Visibly improves water quality and helps prevent algae growth Regenerable and reusable Ideal in combination with the MasterLine Zip Bag Product Description: MasterLine Purity is an advanced filter medium that removes even the finest organic impurities from aquarium water, ensuring crystal-clear visibility. By reducing dissolved organic matter, it helps prevent the formation of ammonium and nitrite, contributing to stable water parameters. It also supports oxygen enrichment and enhances the pearling effect of aquatic plants. Once saturated, Purity can be easily regenerated and reused multiple times. When used together with the MasterLine Zip Bag, it delivers maximum effectiveness and remains perfectly positioned in the filter. A simple and effective solution for maintaining a consistently clear and healthy aquarium.

MasterLine II – High-Concentration Macronutrient Fertilizer for Vigorous Plant Growth Key Features: Highly concentrated formula with N, P, K, and Mg Separate control of macro- and micronutrient dosing Ideal for densely planted aquariums (Dutch style) Promotes rapid and healthy plant growth Suitable for daily or weekly fertilization Safe for all aquarium inhabitants, including shrimp Includes measuring cup (2.5–20?ml) Product Description: MasterLine II provides all essential macronutrients in a balanced, highly concentrated form, making it the ideal complement to MasterLine I in any aquarium. It contains nitrogen (N), phosphorus (P), potassium (K), and magnesium (Mg)—the core building blocks for strong, healthy plant growth. The ability to dose macro- and micronutrients separately allows for precise nutrient management tailored to the specific needs of your aquarium. Densely planted tanks, especially Dutch-style layouts, benefit greatly from this targeted supplementation and experience significantly faster growth. MasterLine II is excellent for both daily and weekly dosing strategies and is completely safe for fish, shrimp, and other aquatic life. Dosage: • Daily: 1?ml per 30?litres ? 1.2?ppm NO3 | 0.2?ppm PO4 | 1.6?ppm K | 0.12?ppm Mg For best results, use in combination with MasterLine Carbo and perform regular water changes (30–50%). After large water changes (> 50%), a triple dose is recommended. MasterLine II is the perfect choice for aquarists who want to actively support plant growth and vitality while maintaining full control over nutrient management.

MasterLine Safe Water – Reliable Water Conditioner for Safe Aquarium Water Key Features: Immediately neutralizes chlorine, chloramines, and heavy metals 15× more concentrated than conventional products ? highly economical Supports fish and shrimp health after water changes Protects beneficial bacterial cultures in the aquarium No need to pre-treat or age tap water before use Suitable for all aquarium inhabitants, including shrimp and sensitive species Product Description: MasterLine Safe Water is a highly concentrated and extremely effective water conditioner that instantly neutralizes chlorine, chloramines, and heavy metals in tap water, creating a safe aquatic environment for fish, invertebrates, and plants. In doing so, Safe Water not only protects the health of aquarium inhabitants but also preserves the essential bacterial colonies in the filter and substrate—especially important during large water changes. Thanks to its high concentration, Safe Water is up to 15 times more economical than comparable products. It eliminates the need for pre-aging or pre-treating water in separate containers. Simple to use: just dose the appropriate amount of Safe Water directly into the tank when refilling with fresh tap water—perfect for quick and safe water conditioning in everyday aquarium care. Suitable for all aquariums—freshwater and marine—and safe for shrimp and even the most sensitive species. An essential base product for any aquarium maintenance routine!