hmmm i wonder if it would work,n what if you put the reservoir above the radiator
n used gravity instead of a pump,you might be able to get it to return to the reservoir
if the return line bent down then back up.

another way to get cool air in is run a intake to your basment.my friend capped off the top of his chimmeny and brought cool air up from the basment to the grow room
SyKo Reviewed by SyKo on . I Need A Cooling System for Closet Setup hi there, i have a closet setup and it is working fine, i don't have it fully enclosed yet as i have to let some air come in because the 400W HPS light is making the temp in there about the mid 80's at times. what is the CHEAPEST easist way to keep the temp under control OR what can i buy that is cheap that can keep the closet under good climate control. thank you Rating: 5