please help my afghan kush is not kusht

010.jpghere is my afghan kush the droopy looking one in the middle , i feed these twice a day once when the lights go on and once befor the lights go off 400ml each hand fed with 4ml a + 4ml b 5ml of enzyme plus and 2 ml of nitro to each 2 lrts of water, they are in coco and clay pebble ( pebbles on bottom coco in middle and pebbles on the top) have good circulation correct ph correct temp so im confused as you can see the others are fine they are all 37 days old except the small one witch took ages to germinate , any help would be apreciated Thanks
 
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