I want to build a bubble tower in my sump to TRY and eliminate micro bubbles.I saw this in another thread but did not want to hi jack it.
http://reefcentral.com/forums/showth...readid=1053339
Question- if I fill this chamber with bio balls(all will be under the water line) instead of live rock,will nitrates be an issue?
I'm thinking bioballs would be a better choice because they are uniform in shape and would fill the chamber better.