micro-bubbles from skimmer help

[regal55]

I have an issue with micro-bubbles exiting my skimmer. I have tried both an NW150 and now a Tunze 9010. Same problem with tiny neutral boyant micro-bubbles. These bubbles are so small that they don't float. Needless to say the over-under-over baffles in my sump are no help.

The sump is 24x12 with a 9" water level. Flow through the sump is 200gph.

Any help would be greatly appreciated.

[xtopher]

you could try a filter sock.

[regal55]

Well I am am using a 10 micron sock on the skimmer output. It really doesn't help. First the Tunze has bubbles exiting the bottom, which is a poor design .

However even with the NW150 the bubbles were so fine that they went right thru the 10 micron filter bag.

[Geoff]

Welcome to TRT!!!



micro bubbles are always a bugger to get rid of. try raising and lowering the skimmer an inch or two in the sump and see if that helps.

G~

[ScruffyRubicon]

What finally got rid of mine was placing a piece of live rock in the path between skimmer output and the return pump. It's not a very big piece, just big enough for the bubbles to hit it. They are deflected up and most reach the surface that way.