120 Gallon Progress

[Skimmerking]

Originally Posted by TheReefGeek

A mag 18 on a 25g sump is asking for micro bubble problems.

It could be the skimmer, or it could just be the water falling into the sump from the drain line is creating microbubbles. That is what happened to me when I ran too big of a pump on too small of a sump.

I would cut back the return pump, and install baffles.

Better yet, use the mag18 on a closed loop and use a smaller pump for the sump return. Or use a much bigger sump.

exactly that is my point about the mag 18 What i would do is install a big power head like a hagen 800 400 gph and have the mag 18 on the CL like you have stated
and then you have all that reactoion time for the skimmer to clean the water even more. I can't remember where i have read about a lower return pump is better any ways. and a lower return pumpliek a Powerhead will save you in the long run.. less electricity