start with less than a fourth of dosage next time u water and slowly increase dosage u feed every other watering i burnt my AFgreat white shark abit, my AFwhite dwarfs when they were young my AFAK47 has taken it better than most but i even stunted her and i was taking it real easy. but i used hot soil dont know what urs is! but my plants are all doing good u can check my journal in my sig if u like to take a look! and about your other strains im not the right person to ask! i know u also feed every other watering but i dont know dosage levels!