Hashashin200
New Member
So which one would be better? They both cost about the same. The cfl is a 4x4ft t5 light with 20,000 lumens. The HPS has about 16,000. I'm not too concerned about heat issues I don't think since my room is air conditioned. Might shell out for the 400w HPS/MH, its so tempting. How much yield will I get off these lights?