question about CALMAG and EC

Hey all.
Kritical Koosh, week 3 growing stage on coco, air conditioner water.
Supplements in the water:
4 mll PL -Aadvanced Sensi Grow A+B
2 mll PL - Advanced B-52
3 mll PL - BioBizz Root-Juice

EC (cleen water): 74us / 168c
EC (after adding the supplements): 2330uS / 172c
PH: 6.4

My question: Do I have to add CALMAG ?
If so... how much?
Thanks.

Bump

I dont use it.