First learn to control kh, Ca, PO4, than follow the list down.GlennF
If I need to start correct the supplements (Ca,KH,Mg,Sr,K,B, NACL, Iron,Iodid) , what is the order the would you start to correct from this list?
Fe is not meant as target level, but as a maximum single dosing limit.
Never mix kh with other saltsin one (small) container.