fresheadies it is a good question. I have done all the research suggested by others and still have managed to burn the ladies in the past!
What is a challenge is trying to keep the ppms at a reasonable amount when adding, ProBloom, Sweet, Calmag, Karma, and hydroplex. My suggestion would be to definitely start at 1/4 strength, and VERY slowly increase. Definitely report back on your experiences.
may the force be with you