So i havent started yet im just reading the threads and taking notes. I am planning on turning a walk in closet in an apartment into a grow room with a 400w hps. planning on taking the door off and putting a plywood or simular door to put my intake exhaust tubes through it. but i was wondering if anyone has used a small heater/air conditioner/dehumidifier to maintain low humidity, and constant temp? also using a 400w hps how many clones should i be able to flower and still keep yields up? the room is around 4'/6'/7' with a 2'-6' area im going to use for keeping veg area, mothers, and other stuff i need to store for the op. thanks for the help