Yesterday we had 95 F and my central air wasn’t working. I placed 2 litters solid frozen soda bottle next to my canister filter (touching its side) and kept an eye on the thermometer. It did lower the temperature slowly by 2 degrees. It stayed 2 degrees lower for about 6 hours, and then I replaced the bottles.
I realize it is a lousy way of doing it and was good enough only for a day. But in case of emergency with the perspective of a cold air coming, it did the trick.
I am happy my air conditioner is working again, otherwise I don’t know what I would do.
I have been looking into this myself. Today my tank hit nearly 100 degrees fahrenheit!!! Not good. I was at work or i might have been able to stop it or at least slow it up some. I have put to much time and effort into this tank this time. I think im going to suck it up and buy a chiller.
Shifting the photo period to start later in the day will help.
Turn on the lights in the early evening after the hottest part of the day. This will also reduce power consumption during the peak power consumption hours when the AC is going to run more.