I need to cool down my NS. It peakes at 30 degrees celcius in very hot days. I grow lettuce and recommended temp is 24 C.
I'm thinking about using the return water from the cooling pads, which runs at 20 degrees.
The idea is, put a
pump in the cooler tank, pump it through some tubing insterted in the
nutrient tank, return heated water back to cooler tank. Use a thermostat to maintain temp. What do you think?
And, can I use copper tubing? Will it do any harm to the plants? If yes, what else can I use?
Thanks in advance.