ok so i live in alaska its does get kinda cold up here so should i keep a water heater in my water res and keep it at a certan temp?
If memory serves me (been a while since I grew hydro), I think 65 F is the optimal temperature for the res. I think anywhere between 60 F and 75 F is the acceptable range. Anything below 60 F will not allow for proper oxygen intake. Good luck