Seedling has curled burned/yellow tips

[stinkbudd]

I have a two and a half week old seedling under florecents that is planted in potting soil without any added nutes just- plain potting soil. It has three sets of leaves and about two inches high. Its been doing great till four days ago. I came in to check the temp of the room and it was wilted - the overwatered wilted look. Except the soil was moist - not wet. So I thought it was heat stress (room got to 95 that day) so I added a cup of water with a few of drops of superthrive and moved it to the kitchen window. It perked up back to normal within 15 minutes. Now the bottom two leaves are curled upward with the tips burnt/browning and yellowing. The top two sets of leaves are still OK, they actually look perfect. My question is (1) Do I leave it alone (2) Flush it with water (3) another suggestion? I just don't want it to spread to the other top leaves.

[mscaboo]

superthrive is some potent stuff,one drop per gallon is all you need.i would flush it with some straight water.

[Bud-Wiser]

flush it with water and levae it alone
just standing room-temp water for a week or two

dont pull the dead leaves off, let them drop

all will be well

i dont use superthrive until i see 4 sets of leaves

its dynamite, like the guy says