Anyone using mills in tupar coco ? That would wanna awnser a ? Or two

Is it necessary to add cal mag when in coco or just up the base nutes of mills since it has cal mag in it

Nor sure what "mills" is, but if using coco and Leds you always nees more cal mag. Can't put a right amount on it since all nutrients are different. Just feed normal and google cal and mag deficiencies and be on the lookout. If they start to show they nees more cal mag you'll know it.