An easy way to keep a small resevoir cool is to freeze a couple gallon jugs (milk containers) of frozen water and toss them into the brew.
GluteusMaximus Reviewed by GluteusMaximus on . Hydroponic Water Temperature ideas I'm looking for some ideas on how to cool the water here. 5 Gallon bucket with 3 gallons of water in it. Aeroponic delivery. I dont have a thermometer (low budget DIY project), my guess is that the water is between 80-90F degrees. I read in some other threads where u guys say warmer water doesn't hold much oxygen, but in this setup the roots are suspended in air/hydroton and being sprayed by water so is the water temp even much of a factor in this case? Some pics to help Rating: 5