how to treat root rot in coco

I got 6 three week old seedlings all are suffering from root roti just transplanted into one gallon pots yesterday their was a lot of brown skinny roots but also some white fuzzy ones ive been treating with aquashield and superthrive twice also when I transplanted I sprinkled humboldts white widow its like great white I use h&g line so they been getting roots acclerator they look better already since I transplanted I just want to keep it from showing shitty ass face agin next watering in gonna start useing muliizyme to eat up the dead root matter anyone got any tips or somethimg I can try should I folior feed with the aquashield I also got some microbelife mycorrize folior spray I read that may help I also read dutch masters zone is awesome for root rot

Quit over watering and keep the root growth chems but back off on the ferts. Keep up the foliar spraying till roots get better and bigger and check PH. That is what I would do so that might not be the best.

Yea ive only been feeding at 200 ppm their in my dark damp basement I think that had a lot to do with it I got a dehumidifier going now