twentyeight.threefive
Well-Known Member
I was able to use tap with no CalMag my entire veg last run. Calcium deficiency did show up as the autos went into flower though.If the OP is using tap water, calmag may not even be necessary.
People just use it because they read somewhere that they should with coco.......not even knowing whether they need it.
I never have to use calmag.
But you are 100% right though. People try coco and read all the (mis)information about coco and calcium deficiencies and just add it in without knowing if it's even needed.