DIY water chiller | Grasscity Forums - The #1 Marijuana ...
Old School. #5 GoldGrower, Aug 13, 2013. that' why I'm thinking of making a chiller, it would cost about 70-80 pounds to make. at the moment I'm putting frozen water bottles in the res every few hours when I'm at home but it' so tedious. there' no way I could insulate it. I think if I put the air pump outside of the grow box it would help ...