Yes it can too much ca will lock out B, Mg, and P if you've had great why add gypsum you run high grams per gallon so your balance may have enough.. And looking at this if I bump up to 5 grams per gallon that will bring my K where i want for flower and by removing the calmag the N stays low just needs little Mg and maybe some ca but 150 is pretty good.. If you go to their website the ppm calculator should show the same.. That is if you are worried about what your feeding the plant or you can just put
more on
and see what happens
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