Description CO2 fertiliser system with pH control device for the automatic feeding of fast and slow growing plants in freshwater aquariums up to 1000 l Easy to use and efficient: refillable 2 kg cylinder. Simple assembly, no separate water pump required, convertible into disposable system Professional water care, automatic control: exact dosing with pressure reducer, even release, effective distribution thanks to expandable diffuser. Check: bubble counter with check valve. Residual pressure display on pressure gauge TÜV tested storage cylinder with overpressure relief. Stand prevents cylinder from falling over. Hose screw connection prevents hose from slipping, check valve prevents water entering the cylinder Package content: 2 kg CO2 cylinder, pressure reducer, pH controller (pH sensor not included), diffuser, bubble counter, hose, backflow stop, liquid fertiliser, daily fertiliser