I have set up a hydroponic system indoors and planted 6 chilli plants in one bucket. It's a DWC system where I fill the bucket with water and mix the nutrient solution and submerge the plant roots in it. I have also set up an air pump with dual outlets to aerate the solution. On top, I have grow light strips.
The problem is, out of the 6 plants, one started to wilt. I planted them two days ago. Here are some photos of the setup:
Any idea why this is happening?