I have a Red Sea dosing pump with 4 heads. (Love it and would 1000% recommend it) and currently have alk/mag/cal as the 3 heads but not sure what I want on the fourth. I dose Red Sea trace elements and ab+ Can i keep AB+ in a unrefrigertaed jar for a while? Could I use the 4th as an ATO or would that wear out the head too quickly? Any other uses for it?