Damon,
I have now cut back the "On-time" from the original 12 hours - - to now 8 hours per day. The 3 lamps provide a pretty even lighting pattern over the 2 trays.
Pyrrho,
I normally put the plants outside in mid-March - - but this year with our temps running 5 to 15 degrees above historical normals, I am now aiming to plant out on March 1. I have two sets of back-up plants growing now, in case we get hit with a hard freeze.
"Belt and Suspenders", so to speak...
Raybo