Water Temp.

Is there a suitable water temperature for nute water for a hempy bucket grow?

Cool and oxygenated is ideal. The warmer the H2O is, the less oxygen gas per volume it can absorb. Also the warmer it is the more pH will fluctuate.

Moral of my post: cool and oxygenated wins the ticket

65f sounds ok . 60 to 70f idk about ph issues in those different temp changes never checked honestly