Micro bubble problem, help explain the purpose of this sump

[little_d]

I am currently helping my buddy setting up a 180, everything was going good but we seem not being able to eliminate the micro-bubble that coming from the return pump. We tried to put a sock on the return pipe, it help a lot with the big bubble but the small one still going through.

Here is a pix of his sump, he inherited it from someone else and I am not quite understand why it was design this way. Anyhow, any idea, comment that can help us eliminate this issue?

Thanks

http://img257.echo.cx/img257/8544/doc500017ff.jpg

[qy7400]

Looks like part of a bubble trap but normally the traps are 3 baffels (over/under/over). Here's a great site with lots of sump designs and info.

http://www.melevsreef.com/allmysumps.html

-Joe

[cadams]

i'm with this guy. knock those baffles out and build real bubble traps