DIY water chiller | Grasscity Forums - The #1 Marijuana ..
Old School.. #5 GoldGrower, Aug 13, 2013.. that's 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's so tedious.. there's no way I could insulate it.. I think if I put the air pump outside of the grow box it would help ..