Hey guys I have been dosing alkalinity and magnesium for a couple months now and I tested my calcium last night and it was running a little low 390 and I was wondering how to dose it. I know people love kalkwasser and calcium reactors but that’s just not realistic for my 55 gallon tank. I was looking into tropic marine all for reef because it would eliminate all the other dosing I have to do (also would be cheaper) any insight will help