80 to 81 degrees is what i keep my temp at. like Dave said, "81 is not that bad.I run my tanks between 80F and 82F.In fact,there have been studies that have shown corals are much less likely to bleach at higher temps(86F+)when kept at these temps.Furtherrmore,its a much more natural temp to maintain a reef at,I think the average temps for the reefs around the world is 80degrees and in summer time,temps on reef flats can often reach 85F." i hate to say it, but i AGREE with Mr. Jones on this one. lol j/k Dave