Originally Posted by generalpetres
i have my cerges reactor all built but was wanting to add either bio balls or foam to help make sure the co2 is fully mixed. which do you guys recommend?
Nothing. Whatever you put in there will get gunked up and will require maintenance. Better to control your flow so that you have balance between flow rate and CO2 rate. You want enough flow to dissolve your CO2 but not so much that it blows the bubbles into the tank....