The space i am growing in is 15ft long but only about 4'10 inches tall. I have a 1000watt HPS light and two 450watt HPS lights with 2 ballasts. One of the ballast i have, the light sits more into it than the other one and it is about 3 inches larger than the other one i have. Right now i have the larger one setup but can always switch, i was just wondering if the 450watt light would be the right light to use and considering the pot i am using and how big the ballast is i would only have about 17 inches from the light to the top of the plants?? is that good enough length with a fan on 24/7??? I have 7 plants that are about one month old, have 3 sets of leaves, and are about 3-4 inches tall, under four 40watt flourescent tube lights 24/7 since the day i started. When i move them under the 450watt HPS light can i switch the time to 18/6?? or will that effect the growth since i already started 24/7? can my plants be 17 inches or even 3 inches away from the light with a fan on and have a good yeild and such??

hummm

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