Here are some current photos showing slight development of discoloration. Let me know if there are angles that would be more helpful.

I haven't fertilized at all yet aside from the potting soil mentioned in my first post. It was turf king potting soil and the bag lists the following nutrients:

Total Nitrogen 0.10%
0.02% Ammoniacal nitrogen
0.01% Nitrate nitrogen
0.07% Water insoluble nitrogen

Available Phosphate 0.05%

Soluable Potash 0.05%

Iron 0.10%

Would these levels have caused nutrient burn? Should I adjust the feeding when the time comes as a result of any of this?

In order to make better use of the oscillating fan, I have placed the tray of pots on top of some small cardboard boxes. They are now positioned well within a consistent stream of air. I am too afraid to leave it turned on any setting but low though as even with the wires holding up the stems the plants are somewhat violently blown around. I moved the fan and plants to opposite sides of the box for now. I am open to any other ideas for the narrow stems.