Can anyone help on this problem

This kinda sounds stupid but it my 2nd grow in with atleast 15 girls in flower and some are in supersoil and 3 im still learning how properly feed still havint masteted my grows but im gettin i just wanted to kno should i be feeding cal mag to my water that i feed to the supersoil too obviously im airraiting my water for 36 hrs and to ones i feed i give them cal mag to ones showing defiencys.
I also wantes to kno if its safe feed bid bud and bud candy to the supersoil containers
Im runnin 2 600 watt hps and room stays at 76

Well if showing sign of defencies doses of cal mag added to your watering cycle is helpful. During early flowering weeks I go with a bloom booster at 11/35/15 when I get around 60% thru the plants flowering cycle I slowly introduce a bloom boosted hier in P and K. Something like 45/50P and 20/25K. I like my nitrogen around 10%. And youd using good soil, yo uh shouldnt go wrong. Treat them well and theyll have you feeling great.

Thanks dannysayo im using roots organic soil too
Im glad now ill start feeding them cal mag to my water
Ill start my new flowering ones with some bid bud and bud candy wont affect the supersoil thats what im worried about

It's easier then your thinking. For one bud candy will feed the supersoil (in a good way) an the big bud can't hurt it. A flush with hydrogen peroxide however could mess up your day if done too much.