Ok I have a closet grow, I've got 2 purps and Im adding 2 more clones in a week. I've got a 400 watt hps burning and im on 12/12, I've used make shift blockers to block out all light. I sktech out that it isn't good enough, is it ok for even a tiny bit of light to get in, or is it going to hermie up if thats the case? and how if the closet is sealed, do the plants still get air? I am unable to break a hole and use an in and out fan that way, so how does that all work? can some please give some advice for a closet grower! thx