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Showing results for tags 'keep it cool.'.
At present operations, afternoon water temperatures have reached 84 degrees in the 1200 gallons of grow out tanks under greenhouse with 60% shade cloth. A 1/2 HP rotary blower moves 60 CFM with much circulation and some passive cooling. I also have the equivalent of 1000' tube and shell geothermal cooling from 78 degree Aquifier water which amounts to 3/4 HP of refrigeration cooling. Due to 30" depth of the eight 150G Rubbermaid tanks, I expect water temperatures to continue to increase. Last summer each 150G tank had a 20" box fan to maintain 82.0 degrees. I will duplicate this today wit