Looking good OMB. How close are you able to get your plants to the T5's without light/heat damage? They appear to be much closer than those under the HPS. I'm noticing light damage on the upper leaves of my flowering girls under 600w HPS. I used T5 HO bulbs to grow up the plants I'm currently flowering, and they loved it. Unfortunately they're mounted into a grow tent and the plants outgrew the tent after a month. Also difficult to control temp in there. But they do seem more efficient and the Phillips ballast and 4 ft bulbs I use have been in operation over 5 years growing all sorts of stuff and I have yet to lose a single tube! I'm really interested in whether you find a quality difference with this, as I am growing for a patient with Lupus and chronic back/joint pain.