So, I'm having some sort of nutrient problem or ph problem, some of the pictures will show symptoms, I think I need a dose of cal mag. But not sure. I have been watering with filtered water with a ph of 6.7 and I'm growing in a mix of fox farm happy frog and ocean forrest with perlite mixed in. I am also using FF nutrient trio but barely have fed them. I diluted to .25 of suggested strength and fed less than scheduled. I have been away for three days for work and I first noticed signs of a problem 2 days before I left. The signs were insignificant and I thought it may be the plant using up stored nitrogen but now I'm worried that they are losing too many leaves too fast, I am only in day 35 of flower. Out of my 11 plants 4 are doing most poorly. Three of them look the same, curling, yellowing drying leaves, with loss of the oldest lowest leaves.The other plant is not yellowing at all but the leaves are clawing and their sides are curling inward, it has been a shit plant since sprout though.