My closet grow was having some heat problems with the 400w HPS as light. So to cool the small space down, I built a swamp bucket!
Here's how I made it:
Large drink cooler$20
Household fan $10
Fountain/aquarium pump (mine was 135gph) $30
Copper piping $10
Plastic tubing $3
I need to cool my grow closet this summer and don't have a lot of money.
I do have access to some free window air conditioners. The problem is I have no window. My closet is next to the gas water heater closet and it has ventilation. now with summer its just too hot. I have an air cooled hood...