Proven Quality: Crystal Quartz Gravel 1-2 mm Key Features: Bio-Function: Effectively supports the aquarium's ecosystem. CO2 Resistant: Ideal for plant growth and CO2 supply. Lightfast and Water Neutral: Retains natural color without affecting water quality. Fine Grain Size: 1-2 mm, optimal for bottom-dwelling fish and plants with delicate root systems. Safe for Aquatic Life: Rounded edges prevent injuries.   Product Description: Crystal Quartz Gravel with a 1-2 mm grain size is a trusted classic from Dennerle, making it a top choice for aquarium enthusiasts for decades. This gravel not only provides a visually appealing aesthetic but also ensures perfect biological functionality in the aquarium without hardening the water. It is lightfast, CO2-resistant, and retains its natural color even after years of use. The gravel is water neutral and completely free of harmful substances, making it an environmentally friendly option. The fine grain size benefits bottom-dwelling fish and minimizes dirt accumulation, while the rounded edges protect aquatic life from injuries. Crystal Quartz Gravel offers an excellent surface for the settlement of beneficial bacteria, making it an essential component for a healthy aquarium ecosystem. Dennerle Crystal Quartz Gravel does not require pre-washing (exception: natural white color).

Precision and Safety: The Carbo START CO2 Pressure Regulator Key Features: Precise CO2 Control: Equipped with an adjustment knob for accurate dosing. Consistent Supply: Dynamic Valve Control ensures steady CO2 delivery. Durable Construction: Made from milled aluminum. Compatibility: Suitable for disposable CO2 cylinders. Enhanced Safety: Built-in fine filter, overpressure protection, and automatic pressure equalization. Backflow Protection: Prevents water from flowing back into the system. Product Description: The Carbo START CO2 pressure regulator by Dennerle offers everything an aquarist could wish for. Precise control of the CO2 supply is made possible by a dedicated adjustment knob that allows for slow and accurate dosing. The innovative Dynamic Valve Control technology ensures a consistent and controlled CO2 flow—essential for the growth and health of aquatic plants. Made from high-quality milled aluminum, this regulator is both robust and durable. Additionally, an internal fine filter, overpressure protection, and automatic pressure equalization protect your system from damage. The integrated backflow prevention feature effectively stops water from flowing back, making this pressure regulator a safe and reliable choice for your aquarium.

Maximum Control: The Carbo POWER CO2 Pressure Regulator Key Features: Dual Gauges: Displays for cylinder pressure and working pressure. Adjustment Knob: Precise control of CO2 flow. Dynamic Valve Control: Consistent CO2 supply for plants. Premium Craftsmanship: Made from milled aluminum. Fine Adjustment: Needle valve for detailed tuning. Safety: Includes CO2 backflow prevention. Product Description: The Carbo POWER CO2 pressure regulator sets new standards in precise CO2 fertilization for advanced aquascapes. It features two pressure gauges that display both cylinder and working pressure, giving you complete control. The Dynamic Valve Control technology ensures a steady and consistent CO2 supply, which is essential for the healthy growth of aquatic plants. Made from high-quality milled aluminum, this regulator combines precision with durability. The integrated needle valve allows for fine-tuned adjustments of CO2 output, tailored to the specific needs of your aquarium plants. Additionally, the built-in backflow prevention system protects against aquarium water flowing back into the CO2 system. Ideal for aquarists who demand accurate and high-performance CO2 regulation, the Carbo POWER CO2 pressure regulator is the perfect choice for your aquascaping setup.

Nighttime CO2 Control: The Carbo NIGHT Pressure Regulator Key Features: Integrated Night Valve: Automatically shuts off CO2 when the lights go out. Steady CO2 Supply: With Dynamic Valve Control for consistent dosing. High-Quality Material: Precision pressure regulator made from milled aluminum. Easy Monitoring: Blue LED indicates active CO2 flow. Guaranteed Safety: With backflow prevention and safe 9V solenoid valve operation. Product Description: The Carbo NIGHT CO2 pressure regulator revolutionizes CO2 supply in your aquarium with its smart night shut-off function. Equipped with an integrated solenoid valve, it ensures safe and consistent CO2 dosing optimized for your aquatic plants' photosynthesis. The precision regulator, made from high-quality aluminum, guarantees durability and reliability. A blue LED indicator makes it easy to monitor the CO2 flow status at any time. With innovative backflow protection and safe 9V operation, the Carbo NIGHT provides maximum safety for your aquarium. Ideal for demanding aquascapes and healthy aquatic plants.