What's causing discoloring on leaves

Hey, I was curious if anyone could help me figure out what's making my plants change colors on lower leaves - drooping. It is some indica bagseed was growing under some CFLs. I Moved to a 600 Watt hid mh. It's being grown in a 2 Gallon Pot with Coco Coir - General Hydro it's about three weeks old
I have three others much healthier and then I have two dieing and one I am pretty sure is dead. The one that is dead I am not sure what happened to it, but it looks like the same beginning stages with these other two starting to discolor - droop.

If anyone has any information that could be useful to me I would appreciate it very much.

Thannks

Chodee are you using any Nuets ? and don't put the HID to close it will burn them. I would slowly get them used to the hid light after the CFLs for sure. Did you just Transplant them to? IMO only they look a bit stressed and if they changed when you switched to the MH I may try and go back to the CFLs until they get a bit larger. Good luck keep us posted

Probably the fact you are over watering the hell out of them and drowning the roots.

Bear420 said:

Chodee are you using any Nuets ? and don't put the HID to close it will burn them. I would slowly get them used to the hid light after the CFLs for sure. Did you just Transplant them to? IMO only they look a bit stressed and if they changed when you switched to the MH I may try and go back to the CFLs until they get a bit larger. Good luck keep us posted

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The one in the red cup showed the issue early on. I moved 4 better looking ones under the MH 600 watt light dimmed at 50%. I started a bit close I want to say about 12 inches. They looked good as far as I could tell, so from there I moved it up about 19 inches and changed up dimming a bit testing temps - watching plants reactions. Next grow im going to definitely keep my distances more from the beginning. 3 of the 4 plants are doing good under the mh light so far. I am trying to save what looks like the beginning stages of same issue on 1 of the 4 good growing ones. Other people were saying looks like nitrogen deficiency, that's what it's looking like to me.

http://www.growweedeasy.com/overwatering