My supernatural og's are almost 4 weeks old. They are in 2 gallon smart pots and am using ffof soil... Have fed twice with AN ph perfect sensi grow a and b... Temps are between 77 f and 82 f.. Roots are healthy and bright white! I don't see anything indicating too much nutes. Have only used 1 ml of a and b both feedings.. With . 5 calmag plus. Maybe a nitrogen deficiency... Im just not sure. One 600 watt led light at 25 inches from the canopy. Any help is appreciated..