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My grow area is a closet 4'7" by 2'8". I'm not sure about how to setup the ventalation system. Should I just have the fan pointing at the plants or though a hole in the door or what? Also theres a heating vent in the closet and im worried about how hot it will get in there, is much heat bad for them? If i need to I can cover it up. Lastly how many hps lights would I need for it?

thanks

Hi. Id say you want 1x 400/600W lamp in that space. 600is going to be better all round. A 5" extractor would be the best solution for the heat. Have it pulling air from the top of the room. If you can, get a fan blowing in to the room at the bottom too. Also an oscillating fan is a good idea. Its going to help keep the room a little cooler, make it hard for pests to get a firm grip and make your branches stronger.