Dennerle CO2 Fertilizer Kit 300 Quantum Spec Ed.

Dennerle DISPOSABLE 300 Quantum is a CO2 plant fertilization system with a solenoid valve, timer, and disposable cylinder. CO2 (carbon dioxide) is the most important nutrient for lush, healthy aquarium plants. By using one of these systems alone, you will see marked improvement in plant growth and health. For aquariums up to 300L.