Just a quick question... why can't you seal the windows? Don't know if you have a Fred's store around you or not, but any value place, even Wally world, should have black-pull-down (vinyl) blinds for a window. Not venetian blinds, but a solid piece of 1 or 2 mm thick black vinyl that you pull down by hand and it covers well. It took one blind per window and it blocks every photon from my 400 HPS... yeah... 400... i'm on a budget (note Fred's.... lol). I used thumbtacks and scotch tape to "leak-proof" the edges.

That's not the Gospel, but it sure worked for me. If you're running/plan to run say 1000+ watts, let ME know if it works with that much light!

Good luck on the grow, bro!
NoDrugs4Me Reviewed by NoDrugs4Me on . Second attempt-First grow log So I'm just now getting serious about growing. Here's my two plants, their both 3wks old. Mistake #1. Used 10k aquarium MH 250watt for week1. Mistake #2. feeding them only micro nutrients for two 1/2weeks. Mistake #3. 24/7 light Forgot to mention that the temps went over 100deg for a prolonged period of time while i was running the 250wat MH with no ventilation. I believe thats what stunted the smaller plant so badly. Rating: 5