New grower/hydro system

BigBud239

Member
So my babies are 2 weeks old in a hydro system, just switched to 3/4 nutes grow/micro/bloom anyway they are coming out fine some better then others, but my question is some of my babies are curling down like one leaf the very top one i am on a 21/3 ratio with a 600w mh light the temps stay around 77 degrees the light is 21 inches away also the bottom leafes are yellow on one plant some plants are doing excellent 2 of them. but the other 4 are doing ok, are my nutes to high or am i just freaking out?
 
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