Thanks for all of the replies everyone. I do have a desk fan circulating air and an inline fan with carbon filter removing warm air from the top of the tent. While I did have one light per plant, I think more wattage would have been good and nutes should have been introduced earlier and at a heavier dosage. I didn't start until many weeks into the grow and I never exceeded about 1/3 of the recommended dosage. I read so much about nute burn that I think I was a little too cautious. In any event, the quality seems decent and I got 3.5 ounces dry from two plants on my first try.
I'm now working on my second grow which is 3 NL autos and one Royal Queen Diesel auto. I had a 2nd Diesel but the seed didn't make it so I just germinated the 3rd NL and planted the sprouted seed today...hopefully have a seedling break ground this weekend. That one will be about 5 days behind the others, but no big deal. I have them in 3 gallon smart pots with 70% Happy Frog and 30% perlite in the same 2x4x6 tent. I've added a third MarsHydro 300 to the tent and plan to start nutes at 1/4 strength in week 4 and work my way to full strength from there (1/2 in week 5, 3/4 in week 6, full in week 7). How does that nute schedule sound?
I'll eventually add a second tent and possibly different lights, but I like the ability to move these the options that three separate lights provides. My next tent might go for the reflector series, viparspectra, or something completely different...who knows!