Well my tank temperature was 84.6 degrees I hoped the 30 gallon sump would fix the problem and all I gained was a Degree, it is now 83.6 degrees the fish don't seem to mind but I shoved a 20 in box fan under the cabinet tonight and the temp is coming down. It must be from the pump since I haven't run the lights more than an hour or two at a time. We keep the house at 70-72 degrees year round, hopefully circulating the air will do the trick. Any suggestion?