I've noticed that, out of all the trees, the one in the Misco self-watering pot looks better than the others. I've decided that I'm going to repot all the plants with the self-watering ones.
Here is what they look like under my homemade grow light. You may not be able to tell from the photo but the leaves are showing what I think is a magnesium deficiency.
Here are some new things that I'm going to be experimenting with. The first is a Coco Tek coco-coir brick that the guy at the local hydroponics store gave to me for free. The next, is Sunleaves Mexican Bat Guano, which is high in the nitrogen that young lychee need. And the last is a bottle of Superthrive, which is supposed to be a miracle elixir that super charges plants.