Hey PDT,

So how would you plumb in this radiator you have and pump water through it? You\\\'d also likely have to move air over the radiator to make it work too.

A high maintenance approach would be to maybe use 1 qt plastic freezer jars filled with water and frozen. They\\\'re fairly inexpensive, I considered adding about 4-6 to a single reservoir but never really tested it.

Also, what\\\'s the high temperature in your room with the lights on? Mine is currently in the mid 70s with AC. In the worst of summer, it stays in the upper 70\\\'s to low 80\\\'s, which is where the problems begin to occur.

The chiller units I\\\'m looking at are from echo and can handle up to 100 gallons, and would cost around $400 per system. In addition to the cooler, you have to buy an additional submersible pump for each reservoir. I figure with 10-12 gallons of liquid, they should be efficient. You should also consider each chiller would generate a bit of heat on its own. I\\\'m think I\\\'m going to prototype a new system that provides a platform on wheels under the entire system that would hold the reservoir and chiller. This would also allow me to start plants in veg and then move the entire unit to the flower room; this would eliminate the step of moving the rooted plants between systems.

Peace,

Farmer rich