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How to keep RDWC water cool!?

Zeravlab
Zeravlabstarted grow question 3 hours ago
Does anyone use a water chiller for their rdwc. Or have a homemade hack of some sort?
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Scrubbyjimbob
Scrubbyjimbobanswered grow question 3 hours ago
I used to throw frozen water bottles in my rez back when I used HPS lights. Just rinse and refreeze when you replace them.
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