You really need at least 2500 lumens a sq. ft. to grow decently; over 4000 is a lot better. A 150w HPS, like I said, will produce about 15,000 lumens. You could get a marginal 6 sq. ft. grow with it, or a pretty good 4 sq. ft. grow with it. 200w of CFLs will probably give you about the same amount of lumens. The CFLs will be cooler so you will have less problem with heat; they are less efficient, so you won't get the light depth into your plant.

Hey Bro, Great information and i am new to the site. I just want to get your opinion on a grow system i have (first time grower). I have a bubbleponic system in a 32X64X24 grow hut i am running two 6" fans with 455 led lights rated at 54 watts and 2 23 watt cfls. (100watt replacments). i am running about 80 degrees and about 60% humidity. I havent planted yet due to i want everthing perfect and running smoothly.(i have 6 5 inch plants outdoors right now) im going to transplant soon and was wondering if my lighting if enough to produce good plants. Any info would be greatly appericiated. thanks alot
Bongtok4u Reviewed by Bongtok4u on . 200w CFL vs 150w HPS So I have 200w of CFL lighting going on 4 plants to cover approx. 3 square feet. Question: Would my yield increase if I used a 150w HPS instead to flower? Also, if I went up to a 250w hps would that double my yield for just another 100 watts? Say 6 square feet instead of 3. And how much power do all these different lights actually pull when you include the ballast? Rating: 5