Getting 2 btas tomorrow for 2 tanks. The powerheads came with foam (e-flux marine orbit) but they only go around the front part. Doesn't the entire head need covered? I used this mesh (for sewing to put around spools of thread). And used a hair band to hold as they kept blowing off. If mesh bags are used, I assume zip them around? Or use the finer bags for like purigen? and zip tie? Those seem like not enough flow and a pain to undo. Trouble with these, is they will act like an algae scrubber but I suppose there is no good idea that isn't ugly!



