I'm in week 2 of 12/12 and have some problems with my northern lights plant. About half of the leaves are yellowing. When I switched the nutes after the first week of flowering to 10 ml per gallon of GH flora micro and 20 ml per gallon of flora bloom, it seemed to nutrient burn so I diluted the 3 gallons in the res with an additional 1.5 gallons of water. Is there anything else I can do to help? Also, the leaves at the top near the buds seem to be curling down and in but are still green. What could be causing this?