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I'm moving into a rental house that we are wonering if we could grom in. Its a full house, so we have a roof we can grow it in(in the crawl space).

Now, the Big questions are,
A) How big is a plant likely to get inside with controlled lighting,
B) Would the smell come down though the Roof itself,
C) Do you think It would be safe to have a light in the roof going for 18 hours a day?

If you can give me any ideas, or if you have ever done anything like this before, pleas,e help me out abit.

roof??????? i think that's a bad idea....

Well for your first question, When growing with lights, You can limit how tall it gets, But in crawl spaces they usually like 2-3 feet tall, So your plant could only get prolly max 2 feet tall, Cuz you got to have the light at the top, And room between the light and the plants, Id think about finding another place....