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Use hard water hydro nutes in coco

I have water hardness of 278 for calcium carbonate. I have these two options:


GT Ionic Hydro HW nutes:




Ionic Coco:




Looking at calcium content of both, do you think the Hydro nutes would be better given that it is for hard water and has less calcium than the coco version? I have Ionic's Cal Mag coming anyway to prepare the coco before using if a deficiency shows.



Edited by catweazle1

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