Peyote Cookies - 2nd grw

Mar 6 - leaves lighter shade. I thought pH was high or underwater but I talked to local hydro store today and he says to double up cal mag a few feedings so that's the plan. he says it's not pH from photos. that's good news. (9pm 2 litres / 1.7 ml Cal mag) also new 5 gallon water jug at 6.4 (lower than last) pistols increasing nicely. smells very fruity which is way different from the first grow where it was very gassy. dropping floranova grow and only using floranova bloom from here on in after cal mag feeding. slowly removing handful of leaves here and there. next Sat week 4 for big defoliation 21 days Mar 8 - 1.5 l water/1.4ml cal mag only. today is day 16F Mar 10 - leaves dark, burn? regardless using only bloom now. 1.4 bloom/2 litres water today.