How are these doing? They're about 10 days old

One plant has curled up leaves with some browning on the tips. I think the light was too close, as I moved it away and the brown tip isn't spreading.

Some leaves have yellow outlines around the leaves.. I haven't given them nutes yet. I saturate them with water when the soil dries out.

What kind of light are you giving them?

They look fine. Just check on them every so often. I hope your not feeding them already. If you are it's way too soon. Keep eye on temps as well.

Hank.

600W MH, they're close enough that temp is 80F - this is 18 hours a day.. the other 6 hours are spent under 2 23w CFLs also at 80F.

I grow other plants that I want to just give 18 hours of light (electric bill), so when that's off, I move these babies under CFLs.. is this stressing them too much?

I would keep them in darkness for 6 hours, but temp goes down to 65F. One option is a heating pad when the lights go off, but I'd only go this route if transitioning them from MH to CFL daily is worse than 18h MH 6h darkness.