I have decide to rebuild my sump. I was going to add dividers so the depris wouldn't get to the return pump. My question is are there any safe sealents out there so I wouldn't have to drown the sump. I'm tring to avoid it, but I don't think it is possible. I just wanted to make sure before I drained it. I'm going to make 3 sections, one for the skimmer, one for the refug. and the last one for the return pump.