Thanks for your answers, im just trying to get all my "ducks in a row" so when i finally start this i will have as little problems as possible. Wow, only 1 plant per 10 gallon tub? I figured at least 2 per 10 gals and i was thinking an 18 gal tub would house 4 plants. But if you say 1 per 10 and 2 per 18 gal, i'll believe that judging by all the photos of the grows ive seen you do. I coulda swore i saw pics of like 4 plants in one 10gal tub. Thanks again. :thumbsup: