I'll soon be adding three MH
's and a 3 bulb icecap retro 660 kit. My question is I ordered 2 icecap 4 inch fans for now and I'm trying to figure out which way will remove the most heat.
One blowing in one side and the other sucking out the oppisite.
Both blowing in and cutting some big holes in the rear of the canopy.
Both blowing out with holes in the rear.
Both blowing in with holes cut in the top of the canopy itself.
Adding 2 more fans with the same theory's as above
If you have a better idea I'm all ears.