Quote Originally Posted by bloodredsoul
# My lights are one 35W florescent bulb and one 20W grow florescent bulb. adding up to about 150-200W worth of light output. :
35+20=55w not 150-200w I think your using the incandescent equivilant figures to arrive at your 150-200w figure. Your actual light output is 55w. It's an area that causes a lot of confusion, especially when you look at how many watts you need for a grow as the general rule is 50w per sq ft. (but this is for HID lights, i'd say more like 80watts per sq ft for fluro's and cfls. Stick to the actual wattage of the bulb not the equivilant wattage. So for your 2.5x2.5 area = 6.25 sq feet. You need 6.25 x 80w = 500 actual watts, which is roughly 10 of your 20 w fluro's and 10 of your 35 w fluro's = 550watts. Thats a lot of lights to get in there and to wire up, it would be more economical to get a 250w HID which will give a bigger yield and better buds. Or if you want to keep to fluros and cfl's cut your grow area down to 2ftx1ft and you'll be good with about 150w's of fluro's or cfls.

Good luck!
hudson88 Reviewed by hudson88 on . Need opinions. Hey everyone. Just thought I would ask for your opinions on my setup. I tried to grow some plants earlier, and I started with,like, no budget, and very limited knowledge, so I had my light too high causing stretching. I went to replant them and the replanting went fine, but I left the new pots out unsupervised for 2 minutes and our cat ATE ALL THE SEEDLINGS. T.T but I am currently germinating more to plant. I have a 2 and 1/2 by 2 and 1/2 foot area I am growing in. My lights are one 35W Rating: 5