Yellowtipped Seedling :(

This little one broke ground (peat moss) about 10 days ago... It's under 18/6 400W MH light... a few days ago I started to notice some yellowing and very small brown spots on the bigger leaves... it doesn't seem to be spreading, but I'm a little worried... any ideas?

Anyone have any ideas? It seems to be getting worse now...

Could be your ph - peat moss can be quite acidic. Have you got a ph meter?

greenbehemoth said:

Could be your ph - peat moss can be quite acidic. Have you got a ph meter?

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Just watered and checked the runoff after you asked, it's 6.9...

Only thing I can think of, is that it's about 79F in the room this time of year, I've only ever grown in the winter before... could they be burned?

I have had that happen before. They will dry to a crisp in a day or 2. I crunched it off and the plant was fine. I think it will out grow it.

baby leaves.... they will die off

Merciless58 said:

baby leaves.... they will die off

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I didn't recall it happening on my last grow, so I was worried about the heat this time... not sure if that's justified or not...