[DrHank]

Thanks Kathy. Since it had to get torn down and go to the glass shop, I had them drill 4 holes for bulkheads. I used 3 for overflow and eliminated the large standpipe. I agree, it looks much better.

Heinz, no, I've never used ozone. I did use UV for a time when I had a nuisance algae and cyano problem. Now I just skimm like mad and use carbon. Plus I do routine water changes and don't feed too much.