trillionaire
New Member
I have a standard wet/dry with the bio-balls on the left and the sump on the right. The bio-balls have a tray under them that keeps them about four inches above the bottom. My question is am I supposed to keep the water level below the balls? Or can I fill it all the way to the top (doesn't doing this defeat the purpose of wet/dry). I haven't had any problems with keeping the water level low except for that I'm now adding a skimmer in the right part of the wet/dry and I think it needs a depper water level than 4 inches. Thanks for your help.