not quite sure... light green spots

Im going on week 2 of jock horror plants since germination. Out of the 5, 2 look normal..ish. 2 have light green spots on the leaves and one is just flat out dying, leaves curled over and yellowing and browning. The 1 dying i transplanted from a soil disk seed starting mix (just wanted to try it) and all looked fine until yesterday, i moved it into fresh FFOF soil and added water, no difference today. The other 2 that have the light green spots, not sure why? Nutes or nitro or something maybe? This is my first grow tent, its at 79-80 degrees, 36% humidity, and my water ph has been 6.5, i havent added anything else to the soil yet. Any ideas?1453326232394.jpg1453326292199.jpg 1453326365994.jpg
 
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