It is a high power 4 in 1 CO2 diffuser for DIY CO2 system (1-2 bar) and compressed CO2 up to 300 L aquarium Easy to set up CO2 system is designed for low cost planted tank insert This Co2 atomizer with build in multi funional all in one including check valve, meter, bubble, Ultramicropore atomization and the U-shaped air inlet Suction cup is also included, for assembly
