Planted Tank Obsessed
Join Date: Nov 2012
Location: Where the devil went down to!
Also if you have you outlet out of the water so the water is hitting air it will also help cool the water but you have to have an open top and the lights need to be a small distance from the surface. also don't run your heater, my tanks stay around 80 in the summer time. with out a heater, you can take a fan and blow on the tanks to help cool them, if you run a sump drop a few ice cubes in it to help, or turn your light off during the day and run them at night, to help keep it cool during the day. just a few of the suggestions i have, hopefully others can help you better.