Does anyone have any opinions or thoughts these set-ups? No CFM rating, but very convienent for my issue. I am installing 2-175 MH
in my existing canopy (55gal) The lights will be approx. 5-6" over the surface. The canopy is an open back. I thought these, blowing in from the middle of the back would somewhat pressurize the canopy and move the warm air around the sides and out the back? Cutting fans into the canopy is not an option, or would 6" clip ons blowing on the water (and sump)be a better solution to evacuating the hot air? The feedback on Ebay is positive, anyone with real experience with these? or opinions?
2 Fan - 5.5" X 4.7"
4 Fan - 10" long X 5" High