I never see info on water temp. My very similar setup dwc, I had high water temp for week 4 and the roots were brown. I rinsed off and gave it a 45 min hydrogen Peroxide bath 1/2 tp to half gallon of water. Cleaned container also and started using my frozen qt.water bottle 3 x a day. Got to keep water 60 to 72 degrees. I use SOS and Voodoo juice. Looks great after 2 days. I'm growing think different week 5.
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