Ocean Free Hydra 40 Internal Filter External Aquarium Filter but fish also react very

but fish also react very sensitively to elevated copper levels

Freshwater compatibleUL certified filter

Suitable for aquariums of 800-1200 litres

the correct CO2 level is easy to read off

Terrarium size is suitable for 2 fully grown adults

Ocean Free Hydra 40 Internal Filter External Aquarium Filter but fish also react veryThe Ocean Free Hydra 40 internal filter uses Hydro Pure technology to ensure your tank has stable water quality while being environmentally friendly. By filtering through the Hydras 3 step process, the Hydra will turn your ammonia, nitrate, nitrite and phosphate into biologically clean water. Suitable for tanks 200 500L.