Excellent thread!!!
Quick question if possible. I am currently growing using a total of 14 18W CFL emitting a total of around 1500W (energy saving bulbs).
I have found t5 Arcadia Plant Pro Lights (I like the name) promising excellent results.
http://www.arcadia-uk.info/product.p...10&id=4&lan=en
The spectrum is:
I take it that they would be good for veg and then switch back to my white ones during flowering.
They are a bit expensive. It would cost me £200 to change them all, but should that mean an extra 0.5 ounce per plant, and I have 5, then it could be worth going for.