I have found Calcium nitrate (that says on package). But looking at nutrients list, it's listed as N+CaO (15+16).
It's basically the same source of Ca as Canna mono Calcium (CaO), which is 15€ for 1L. And that which I found is 5kg for 6€. Can anyone confirm it's okay to have this for RO water in autopots (coco)? I will mix it with epsom salt to get Ca/Mg.
I also can get other form, CaCO3+MgCO3 (50-55+40-45). Maybe take this one which has already Mg in it? It's Ca and Mg carbonate.
It's basically the same source of Ca as Canna mono Calcium (CaO), which is 15€ for 1L. And that which I found is 5kg for 6€. Can anyone confirm it's okay to have this for RO water in autopots (coco)? I will mix it with epsom salt to get Ca/Mg.
I also can get other form, CaCO3+MgCO3 (50-55+40-45). Maybe take this one which has already Mg in it? It's Ca and Mg carbonate.
