First Grow GDP x Gumberry Auto

im still figuring out the 2 part MEGA CROP ive cut back on the part b the leaves are a bit dark im usng part A 1 GRAM a gallon part B 2 grams a gallon i was using at 1.5 a 2.5 b im also using mega crop sea kelp at 1 gram a gallon i used some recharge at 2.5 grams a gallon day time temps are 78-79 maybe hit 80 but not for long night time gets down to 68-69