Strawberry Cough - Newbie DWC

Transplanted to netpot on empty bucket with fully custom, top of the line, 2-liter bottle humidity dome (11 days after starting seed) Water inside the bottle was just from washing it out. Looking okay, first true leaves were a little frazzled but new node is looking good. Hand feeding to keep the rockwool from drying out, nutrient mix (per gallon): 3g Jack's 5-12-26 2g Calcium Nitrate 1g Epsom salt small sprinkle of Great White EC=2.0, pH=6 Light set to ~40% @ 16"