Billy I Have a 1/3rd Custom Sea Life Chiller that will cool your tank to 65 if you wanted it too.. Wth an enclosed canopy and MH running.. I kept this running my 150 tall with 3 75 gallon tanks and two 45 gallon sumps in an office with no ac at night .. Let me tell you the temp inside was at least 85 al day .. But the tank was 78 constant... This is a very nice chiller that is run inline with your return or I prefferend Separate return loop... Let me know if you want to deal.. Thanks for your time Mj