Microbubbles in tank

[recoiljpr]

In my 65, I am having a problem with really tiny microbubbles in my main display. This system has been running now for right around a month or so, so all of the plumbing should be "broken in". This system uses a overflow with a 1 3/4" durso standpipe to take the water down to my sump. The end of the return pipe is spa-flex, I have tried placing the line above, at, and below the water. I get no change in microbubbles.

There, it goes into the first chamber where I have my coralife 65 skimmer which then feeds into my fuge, and the fuge feeds the return pump Mag 5 (small, I know I will be getting a larger one).

I thought at first it was my skimmer, but I turned it off for 2 days and I was still having the microbubbles. It "looks" like I have no microbubbles in my fuge (but that could be because I view the fuge from above the water). My return pump is completely submerged under water, with no parts being above the water. The return line is 3/4" PVC terminating in a 45 elbow into about 2 feet of loc-line with a simple nozzle.

Anyone have any ideas?

[Beverly]

Do u have a baffle in between chambers u could place a sponge or filter pad in to? I placed a small strip of the filter pad in my last baffle before it hits the return and it solved that problem for me.

[dmweise]

If you put a filter sock on your return pipe that goes into the sump that should take care of the problem.

[uriah]

Airation is good for the water, baffle would probly be the best bet. Does your return pump take in air from the overflow?