I have a smaller 2x2 grow tent. I started monitoring the temperature and realized when I cool it with a fan out the top, I lose all my humidity, and the humidifier runs all day. So I was trying to figure out ways to lower the temperature a few degrees without losing the humidity.
My thought process is to make something similar to a water cooler CPU system for the light, as the light (mars hydro) produces the majority of the heat.
I am a machinist so am able to create a custom water block manifold for the light - applying thermal glue to ensure it transfers heat properly, then have a pump and cooling radiator / fan outside the tent.
Pump will run the water through the manifold, and hot water will cool off in the radiator outside the tent.
Hoping this might lower temperature 5 degrees F during the lights run time (from 85 to 80). Not sure if it would have any effect during lights out, even 1-2 degrees would be neat.
Open to other ideas, I am familiar with peltier cooling but not sure how that would work in a tent as I usually see this online with glass terrariums.
Thank you very kindly.