"Seedling" - leaves curling down, growth halted

Hello folks. Good afternoon. I come seeking knowledge.

I'm growing indoors, watering every 2 days give or take (I use the 2 thumbs dry rule), my growing medium is 2/3 moss peat, 1/4 perlite and the rest is vermiculite. My tent is a small 60cm x 60cm x 150cm. I'm growing only one plant. Auto Sour Diesel.

Background: So, 2 weeks ago she germinated. I've been using a HPS 150w bulb from the start, but turns out it was too close. I live in a hot area so the temperature was at a medium of 80F, going up to 85F sometimes. And she germinated during a heat wave, so ventilation wasn't really helping cause she was sucking outside air, which was hot anyway. So, as you can see, her 2 first true leaves burned and they aren't going to recover pretty soon. I got a little sad because of that but that was ok because I knew the problem (the heat) and she kept growing still. So this monday the heat wave was still intense and RH was at 30%, so I decided to buy a 85w CFL light and on wednesday had swapped the HPS for the CFL. At the beginning I got a mistake and put the CFL too far (like 30 cm +- 14"), I got her closer now aprox. 4" as you can see in the picture.

So I tought my problem was kind of solved... on thursday she was looking pretty dry and had curled down a little, so I watered her up. She lifted up a little. But yesterday, to my surprise, once again she curled down (like in the picture). Apart from that, I have not seen any grow since I turned the CFL on, not even when I put her closer 2 days ago (thursday as well).

So now I'm starting to get really worried because of the growth halting. I'm pretty sure it's a "Plant Moisure Stress" all over, (http://rollitup.org/t/plant-moisture-stress-symptoms-and-solutions.150004/), but I don't know what's the solution. Should I leave her to dry? Also, she's 2 weeks now apart from being small, so I tought maybe it was time for nutes and maybe that's why she halted.

I want to hear your opinion. Is it best to just discard it and grow a new one, without all the problems I mentioned? I'm really starting to consider that.

Cheers.

I would go ahead and start a new one, but keep this one to experiment on. You might yet bring her back to life. I would keep her farther from the light for awhile to give her a rest and give her foliar feedings with a light dose of fish emulsion or seaweed juice if you have it a couple of times a day. I've seen worse come back to life with a little TLC. She looks dry to me, it's hard to tell with pics.

cindysid said:

I would go ahead and start a new one, but keep this one to experiment on. You might yet bring her back to life. I would keep her farther from the light for awhile to give her a rest and give her foliar feedings with a light dose of fish emulsion or seaweed juice if you have it a couple of times a day. I've seen worse come back to life with a little TLC. She looks dry to me, it's hard to tell with pics.

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Hey cindy, thanks for the answer. If you want, I could give more pics, just tell me the angle you need them. I don't have fish emulsion or seaweed juice, the only nutes I do have is a FloraNova Grow, I could give her a little, little dose just to see if that's the problem. The issue is that when she curls down like that it's either too much water or too low or RH, but I've let her dry, watered her, saw the RH go from 30% to 50-60% now and she didn't get better.

I wouldn't give her the FNGrow yet. Do you have any epsom salts or could you get some? Try a 1/2 teaspoon to a quart of water, put it in the finest spray you have and try to spray the undersides of her leaves a couple of times a day. Be patient. You should see some improvement in a few days.

cindysid said:

I wouldn't give her the FNGrow yet. Do you have any epsom salts or could you get some? Try a 1/2 teaspoon to a quart of water, put it in the finest spray you have and try to spray the undersides of her leaves a couple of times a day. Be patient. You should see some improvement in a few days.

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Ok, I think epsom salts are widely avaiable so I'll try to go to the drugstore and find some. Why would that help her, for curiosity?

It adds magnesium and sulfur for one thing, which strengthens the cells of the plant. I've used it on sick plants a lot thru the years and it sure can't hurt anything, and it's cheap. I said one tsp, but actually 2/3 tsp would be better. What have you got to lose...except about a dollar? Seaweed juice is even better, but it is harder to find. Dried seaweed from any Chinese market can be used to make it. I grow organic so these are some of the things that I use. Someone might chime in with a better idea.