(p.s. That is one of my Nigerian bucks, Dusty, on the picnic table outside. I didn't even notice he was in the picture until I put it up here.)
Let's take a closer look at the two planters.
Here is the aquaponics system (below). The plants are healthy and ready for me to start harvesting leaves.
1) I flipped the piece of foam insulation over so the silver, reflective side is no longer facing up. Maybe there was too much radiation causing plant stress?
2) I drained the planter (saving the nutrient-filled water to use on my outdoor plants). I filled with fresh water and nutrients to a TDS of 1200 above my initial water reading.
3) I moved the spindly, bolting arugula plants as well as one of the smaller greens to the aquaponics side. I just set them in the planter in their tiny pots.
4) I planted 5 bok choy in the vacated holes. Bok choy can be happy anywhere, so I will be surprised if they don't thrive.
Here is the adjusted setup: