I've had a few pepper volunteers come up in my seed starts. They're happy little accidents, at least for the time being. Hopefully they wind up producing. Past results have been mixed, but I have the space so I separated them into their own containers.
I have no idea why, but my pepper leaves always turn black under my grow lights. They flip to green once they're outdoors.
Thanks for the follow up. You and @[email protected] poked me into taking a photo of one of the volunteers taken outdoors:
The lower leaf is a touch yellow, but the plant seems fairly green. I am starting to mix a little miracle grow into their water so we'll see if that helps while they're under the grow light.
Oh. Ok those look way better. Just lighting I guess. I wouldn't worry about nutrients then.