I think it looks like it may be a problem with the potting soil too. My seedlings used to look like that when I used cheap potting soil.
I have since switched to hydro and took a growth comparison photo. Both of these plants were 1 week old when the photo was taken. 1 plant was put in a weak hydro solution with my regular MH lighting set very high above the plant. The other plant was was set in indirect household lighting and was just given a little water. Can you guess which is which?
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