No where in my post did I mention PL-L's and I do realize that is what this thread is about. I just take issue with people assuming what HPS or any high intensity lighting can and cannot do without actually using it.
And correct I have used t-8's and CFL's. They will do fine if it is all you have and for micro growers obviously it's much easier to deal with heat issues. You won't get the density of HID lamps though.
We are in complete agreement then
(I'll send you a Hallmark later)