I know bio balls dont work well submerged but what if i put several air stones under the submerged bio balls or scrubies would that work ok or is that still a bad idea?
scallywag14;5057890; said:I why would the air stones under the bio balls pushing up thru the balls circulating air and water not work as good?
Crispy;5058576; said:why not just run a few sponge filters? I run a few in my sump instead of submerged media. they come in handy for alot of things.