Nate I'm growing tom's and a few veg under LED's. What's the wattage on those lights? Toms will spring up fast and grow like weeds, you'll want to be diligent about pruning them right to keep them in control and under your light.

Here is a link to a discussion about them over on the Growing Tomatoes forum here. http://forums.gardenweb.com/discussions/2170728/variety-selection-caruso-heatwave-etc?n=7 There are other discussions about them the search pulls up if interested. Dave

Your tomato plants look great. I’ve been growing tomatoes in containers for more than 20 years. For several years in the beginning I did like you and grew two plants in each pot because I only had a few pots and I was worried one of the plants would not produce or would outright die. I didnt get a lit of tomatoes that way and i had a lot of disease due to overcrowding. I gradually listened to advice from more experienced gardeners and now grow my tomatoes in 20 and 25 gallon grow bags, one to a pot. The plants are much healthier and much more productive. YMMV. The one thing that concerns me is the kind of fertilizer you are using (seems much too high in K) and how often you fertilize. I wouldn’t fertilize any more often than once every two weeks. And I would advise you to find something like the fertilizers on this list and follow the package directions. https://www.bobvila.com/articles/best-fertilizer-for-tomatoes/

Looking at your temps, the last couple of weeks have had highs in the 90sF and lows in the high 70sF. At those temps, tomato flowers largely won't pollinate. We've had unusually high temperatures this spring and summer, and I've gotten very few tomatoes at all. As it cools off, you may have more success with pollination, but the question is whether you have enough growing season left to ripen tomatoes. More direct sun may increase the number of flowers, but it won't help with pollination. This has been bad weather for tomatoes over most of the country.