@ttystikk So, I would buy a large 1/2 hp chiller or something? (large enough for 5-6 55 gallon rez?) I've seen penguin chillers made in the usa for a decent price. I would then get heat exchangers (could you suggest one for the metal 55 gallon barrels I use for a rez?) Id run them into each of my rez, and circulate the cooled water from the chiller into those exchangers cooling my rez. Correct? So it would almost be like the dehuey DIY setups? I assume I need steel or something then as copper is bad.
OR do you mean i circulate the nutes through an exchanger thats sitting in a rez of water that the big chiller is keeping cold?
I notice penquin sells PG chillers as well, would these be more efficient for this method of chilling several rez?
excuse the many questions, I just wanna be sure I get this right in one go, and thanks a ton for this tip, i would have never considered this.