A complete pressurised CO₂ system for planted aquariums, giving your plants the extra carbon dioxide they need to grow well and compete against algae. The set includes everything you need to get started: Colombo CO₂ Profi pressure regulator 800g disposable CO₂ cylinder 3-in-1 diffuser with built-in bubble counter and check valve CO₂ hose and stand Setup is straightforward — connect the regulator to the cylinder, run the hose to the diffuser, and you're dissolving CO₂ into the water within minutes. The bubble counter lets you see exactly how much gas is going in, and the check valve stops water siphoning back into the regulator. The 800g cylinder gives you weeks of continuous use before it needs replacing. Once it's empty, you can extend the system with a solenoid valve (sold separately) to automatically cut the CO₂ supply off overnight — plants don't use CO₂ in the dark, so this can save a meaningful amount of gas over time. Suitable for aquariums from 50–400L. Approx. height to the top of the regulator pin: 28cm. Width: 10cm. We pack every order carefully at our UK facility and dispatch quickly, so your CO₂ set arrives ready to fit.
