Back on topic (sig is long gone!)...
Well with things back to normal, and finally getting all my parts for my hood, work is underway. Just working out the wiring. I'm using a WH7 to fire 2 36" VHO.
The question I have is regarding adding fans to the canopy. I'll only have one 175w MH inside for now, but with the possibility to upgrade to 2 down the road, I want to have it ready. Do I need to power the fans on their own, or can I somehow run them from the power off the ballast or MH? (my thoughts say no, but I have been wrong before).
Also what size (mm?), cfm is recommended? Canopy will be about 16"x48"x8"(h).
I was planning on putting 2 fans on one side, blowing air into the canopy (as to not suck salt air into the fans), and on the other side of the canopy put one of these:
