In my 75 gallon soon to be reef I am still getting the diatoms but the big thing is the small bubbles. As far as I can tell no air is being returned through the return pump, unless the bubbles are microscopic i'm pretty sure thats not whats causing them. I don't measure orp or oxygen levels so could this be the problem? They aren't a nuciance just unsightly. They cover the rocks and sand.. What do I do? I think i'll have an aquacontroller fairly soon so i'll be able to measure and control everything a bit closer to par but at this point what do I do?
