stay away from 10-64-10 trust me its not working for me.. does your soil have prenute or slow release nutes mixed in.. if so i would really go light on adding any other nutes... try to find 0-30-18 or anything close.. you want almost zero Nitrogen to much will lock out your P and that will lock out your K. weed specific nutes are online at advancenutrients.com or simplyhydroponics.com