Seedlings curling under and loosing pigment.

I am a new grower and i have tried to read up on everything i could. Im having problems with my seedlings, I originally planted 5 seeds in each pot and i have 4 pots, they are in a 2.5x2.5x4 foot closet with a 250 watt hps light about 2 feet away from the seedlings, I am afraid of heat. However my first 5 that i planted before i added 15 little ones started to drain pigment and curl under, so i decided that it was over watering or poor drainage. So i went down to my local gardening storeand got some silt (fyi I live in cairo, egypt. So it is from the nile .) I then replanted everyone of my little seedlings into the bottoms of water bottles, supplies are limited and hard to come by in egypt. I thought i had gotten a good watering schedule but i guess not because my seedling that are a week younger than the other ones have started to curl under a tad bit and are looking a little sickly. I am growing in a absorbant soil that has a bit of peat, with mostly silt at the bottom. Some of them perked up a bit after being put into the new soil, but i am wondering whats going on with the rest of them. Im not worried about scrapping this batch, i have around 200 seeds from decent bedouin pot of the indica variety, and about 10 left from the states which was a decent sativa. Here are my plants for your lovely observation.

yr plants dont need as much light right now...u can move the hps a foot more away...at least. And dont use see tru pots....use real black ones with drainage holes? only give water when really dry...
is it too hot maybe??
I have some seeds in 4th week now...

I am in egypt man, i can't find real tiny pots, so i made some out of water bottles.

Can i have some real help please, it's kinda tough knowing a grower in africa, solid help is hard to come by.

I'm no pro by any means, nor am I familar with growing in africa. However I'm only a few days further into my first grow than you are by the looks of it. I have one of mine doing this as well... I've been reading through pages and pages of stuff I've known, and the only thing I can come up with is overwatering, possibly water ph problem. I slowed the watering cycle slightly and it seems to be recovering slowly. Sorry I cant provide solid help, but this is just what I've learned

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