Stupid Question Concerning Overflow Plumbing

[Madreefer]

Originally Posted by mark

seen some overflow chambers that are doubled layered, slits on bottom outside piece then water flows over the top of the inner layer.

Would seem rather silly that the slits on yours would be all the way through. Not a smart way to build overflow.

Thanks Mark yes it was double walled. I was able to take out both drains and both pipes from the return lines. I tried to vacum out as much of the sludge on the bottom but it was too thick for my "tank only shop vac". I poured a half a bucket of fresh water in the overflow and this is the water that came out that came out. This is after sitting in the bucket for 1hr.


After pouring water out this is the 2" of sludge that was left that was filled with some pretty big bristtle worms.


This tank has been setup for about 3 years. How often do you people clean out your overflows? I've never thought of it.