u/Ground_Spam

Hello, first time poster here. I'm starting these tomato plants under a grow light in my basement. They sprouted fine, but as you can see, they are not doing well at all. The leaves are purple on the underside, with some of them yellowing and even drying off. A couple of them look really bad. Purple suggests low phosphorous, but might be the artificial light instead, and doesn't explain the leaves dying. Any advice would be welcome.