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I use two 18" T5s(6500K), one 36" T5(6500K), and 8-10 32W CFLs(6500K in veg, mixture of 6500K/5000K/2700K in flower). Switching it up for my second time around, the T5s are all supplementary and I'll have 8 overhead 32W CFLs with a bunch of 23W CFLs around and inbetween the girls(position is...

Cheers on this thread. I had some stretchy little girls because all I had in the box at the start were the supplementary T5 strips from my flower box in it and they were reaching hard. Reburied the girls, raised them up and added a spiral over their heads and all is well.

2*57600LM=115200LM 16*95W=1520W ~76LM/W Still putting out more LM/W than the T8 setup.

Why go with T8s? Just because you have the fixtures already? A 12 tube VHO T5 setup puts out that many lumens at 12*95W. If you want to cover a larger area, 2 8 tube fixtures will put out over 100000LM at 16*95W. Both options use less wattage and put out more light. You could run 4 horizontal 2...