Hey add some hydroguard or something similar will help with transition and the high temps and prob get rid of alot of problems. As for your nutes always add cal-mg first then mix up rest nutes if you dont could lock out other micro nutes and others. As for the amount start low not sure if u have a ppm meter or ph but start low and see what she does. amd just use your base nutes no additives to get plant on track then you could add the additives once you get under control. Shoot for like 200-350 ppm .7 scale so little less if you on the .5 scale for your ppm meter. If ppms go up and ph goes down she too strong and if ppm goes down and ph rises then she is eating and needs more nutes.