- 13 Apr 2014
Is there an alternative Ca salt I could use that mixes stably with MgSO4 ?
Only if the Ca content in the intended mixture is below the solubility threshold for CaSO4 precipitate to form.
Should I replace KNO3 in my macros with CaNO3 instead ?
Only if the resultant mix contains no Sulphates or Carbonates or as above below CaSO4 and CaCO3 solubility threshold, thus the salts need to be Chloride based. If you want Calcium reinforced Macro you will need to source the Chlorides for all the major Ions or change nothing else but dose just the CaNO3 from its own bottle.