Micro bubbles

[reisy00]

So I am getting a lot of micro bubbles in my display tank. I have a sump that starts with drain and skimmer then chamber for Refugium then a bubble trap with a filter and my return chamber. The return chamber does not seem to have micro bubbles but I am getting a lot in display. Any suggestions on how to fix this?

 

[BigRedsReefs10]

If there are none in the return chamber my guess would be a very tiny hole somewhere in the return plumbing that's sucking in air

 

[reisy00]

Problem fixed raised water in return side about an inch must have covered a small leak in my flex tube.