I checked my tent at 2100 last night to be sure my timer was working properly, and found a dark tent. I put my 8 bulb T-5 light over the plants while I took the HPS light apart. Turns out the new bulb I purchased had gone bad after the FIRST light cycle. Pulled out the old bulb and replaced it with the back up, and was under full HPS light by 2130.
Res check this morning showed 1300 ppm / 2.6 eC at 6.1pH. As the res looked low, I added two gallons of tap and 20 ml pH down for a 1200 ppm; 5.9 pH mix. The plants are drinking about 1 gallon of water a day, and I think I forgot to top off yesterday.
I didn't get a chance to take pictures with lights on, so all I have is a sneak shot showing the tops of the plants:
Checked the clones this morning, and the temp in the greenhouse was 90F! I had opened the vents in the top of the cover, but the lights were so close I don't think it let any of the heat out. Moved the lights up 2" and left the vents partially opened. Air temp is now a constant 82F. I think the clones yellowed a bit, but I don't think I killed them..