Thanks doc. Normally you'd be right but with H&G nutes they have plenty of calcium already in there base. What they are lacking is a bit of magnesium why we use Epsom salt. If I were to use calmag plants could potentially be getting too much calcium creating other lock out issues.
So H&G says that ur NOT supposed to use an oxygen/air pump in the res nor should you do multiple feedings in coco because "roots need to "work" to find nutrients and water (preventing the plants from becoming "lazy")". Have you heard this before?
Personally I don't trust most of the nute companies. I decided on GH flora (3 part) cause they've been around and mainstream hortis use it. Also add calimag if in coco and I throw in a bit of PK booster and floralicious plus.