ice box

working on a diy water cooled dehumidifier to run off the 10,000 gallon cistern directly below my grow....I am a auto mechanic not an engineer so......Thoughts, comments, questions, suggestions concerns? some info: started off life as a royal sovereign 45 pint dehumidifier Dehumidifier...

Anyone tried the hydro innovations ice box ? If so how were your results ? How cold does water have to be ?

Is the heat exchange effective? Searched forums but havent seen anything on them. Here is an example NOT AN ADVERTISEMENT blueearthsustainable.com/air-conditioning-heating/hydro-innovations-6-inch-ice-box-heat-exchanger-hsice-904490?gclid=CIrs4eHUos4CFcokgQodYaMA0Q Thanks

I'm going to start a grow room soon and would like some advice. Is it possible to use the materials below in a typical 8h x 15L x 11w bedroom with 4x4 tent. Bedroom temps are around 70-80 summer and winter. Pics of room are below. I will be exhausting out a 2nd story window, and intake will...