Any ideas on methods of heating nutrient temps I live in AK and my nutes are dipping below 60 degrees I was thinking of a aquarium heater or reptile mat but I don't think the thermostat on these has a low enough setting.[/QUOTEi had to use a heat mat last winter it works.
Use a heating mat just put a towel or two between the pad and rez to adjust temperature. I would look for a small waterbed heater.
Or just take an extension cord, cut the end off of it and throw it in the rez. Lol. Don't do that actually but it is kind of funny as the ground on my pump went south the other day and I reached in the water while draining it and I was like ...