I am having problems with excessive water temp...85!! I live in the Chicago area and the heat this summer has been brutal. Unfortunately, I have not been keeping an eye on the temp (shame on me) and my short sightedness has become apparent. I purchased a leather coral at the LFS and within 36 hrs it had completely disintigrated. That same night I lost 3 fish. My home is air conditioned and I never anticipated this. This all occurred within last 24 hrs. My water parameters are all good and always have been. I dropped a digital thermometer in the water and found it to be 85.4 degrees. I have been putting ice packs in my sump to cool the water as I am balking at dropping big $$$ on a chiller. Are there any other methods to cool without a chiller??? Please help!!!