Theres a big difference between a tsp and a tbsp... lol
Ive actually had H&G tell me that its designed for soft tap water, and adding 150ppm of calmag to the water will prevent deficiencies. But these guys also want you to use shit like N boost and amino treatment, so fuck them.
House and Garden
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Ive never noticed obvious cal deficiencies feeding near normal strength, but some extra mag here and there keeps them much greener, without that dark, too much N look.
If you add cal, dont go overboard. Some people cause lockouts and end up using like 10ml/gal, chasing their tales.
This describes my situation to a tee right here! Called hg and they said to add calmag til water was 150ppm. Still had lockouts... steadily upped base nute until 9-10ml/g. Just found out my coco is ammended with cal.... probably the issue!
What do you add for mag... just plain epsom? What strength do you mix the base at in veg and flower... 5m/g veg and 7.5 m/g flower seem to be general guidelines. Thanks.