Bubble Trouble

[robocop]

I’m getting a lot of micro bubble in my DT from my sump. I’m not sure that is has a true bubble trap see the picture below. What can I use to reduce or eliminate the bubbles? I was thinking some sort of sponge between the baffles.

 

[dogstar]

Try running the return pump from the left side and drain the DT to the right side with skimmer in the right also,

 

[kaholic]

I have the same sump/refuge robo. I have my return pump on the left and it drains from my o-box to the right, which is the refugium. Couldn't fit the other equipment in the right side so I made the refug a little smaller on the right side. I have no prob with micro bubbles at all. The problem I'm having is with too strong of a flow from the drain line and it's kicking up sand in my refuge. In hindsight, should have built my own sump/ref, but hey live and learn. I replumbed it this weekend and put a ball valve on the return but it still seems to be too strong. Still trying to figure that out. May try a sponge of some sort myself.