thanks AK, the back left one has been a trouble child from the beginning. same strain as 2 of the 3 others (blue dream) with the same feeding but is much shorter and some of the fan leaves have a brown stain mark. I was thinking it needed more cal/mag (using distilled water) but the other 3 have no problem..so i was thinking about just letting it go on the same feeding schedule as the others and see what happens..thanks for the reply!
also this is my first grow and i’ve being having spider mites. I think they are under control and i’m adding also some predator mites. any advices? I see the flowers still two small. it’s a 100 watts grow light on a 2x2