I run a mix of organics with my gh nutes. I live in new England too, Connecticut. We close?
Organics will stain your roots that doesn’t mean there rotting . If you get root rot you would know , thats not root rot.
The spots could be bugs , or probably PH problems . Is your ph dialed in , pH is important in dwc? Dwc likes cal/ mag as suggested.
You want allot less water in your bucketz than you have. You want a really nice air gap.
Your going to want to use SMALL aquire heaters soon to and set the very low 55-60 if your in a garage or basement. If your on concrete put wood in between the floor and bucket. Frozen roots will stop growth.
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