I still have 8x 23 watt cfl's, 4x 2700 and 4x 6500 just gotta get them back from mom without rasing suspicion, gave um to her when i quit the last time. I found the cfls to be ok i was doing 2 under almost 24 and got around a foot tall with thick healthy stems was at the second set of 7 in 3-4...