I've narrowed the problem down to a new RO/DI I've been using. Last night I was getting some top off water that I store in a barrel. I noticed it was a bit murky and a bit slimy. I dumped the water into the sump and the skimmer started overflowing again. This morning I used some bottle water that we had, skimmer actually got a bit better and settled down a bit. Now i Just have to find out why the RO/DI is causing it to go nuts. I think the first thing I'll try is tapping off the RO and not use DI to see if that's it. When I first set the unit up I ran it for about 1/2 hr to clean it out. I then made 35g or so of fresh water. I dumped what I had left from that last night, made about 15g of new water, but it is has that murky look to it...
Walter