lower your ph to 5.8 i noticed when nutes are added to water i got up to .2 to .3 points higher in ph so im guessing ur ph is more like in the range of 6.7 - 6.8 thats to much
so i would try no nutes and run water at 5.8 let it grow a bit before u add nutes critical time ur plant is in let it grow before nutes my thought tho good luck