Let's talk about bio load.

[mikellini]

Originally Posted by Aquattro

Like you said, excess bacteria. The ones I don't care about. Maybe I'm just not understanding your point, but I will agree that aggressive skimming is desirable to remove this excess.

IMO the solution lies in DC controllable pumps. Get a skimmer that is easily oversized, and turn it down until you get a consistent foam head. Problem solved?