Micro bubble MADNESS!!!!!

[banditpowdercoat]

Tried slowing down the return pump? I have to throttle my return down to lessen the microbubbles. Occasionaly I'll get a Burp of bubbles and will cloud the tank. Its worse if the flow is more.

[Der_Iron_Chef]

Filter sock on drain from the tank to the sump, unless you think it's your skimmer?

[Drock169]

my guess is a pin hole in your plumbing adjacent to your return pump. I had the same issues and noticed that micro bubble were only found in the vinyl tubing after coming through the return pump.