After some research: i found out that without the proper amount of magnesium coral cannot use the calcium present in the tank. Therefore, if your calcium levels drop a certain amount of calcium a day can i assume that i have the proper amount of magnesium. This is just temporary cause my LFS
was out of magnesium test kits. But considering i do frequent water changes as well has test for KH
and Calcium( and have the supplements if i need them) i figured i would be ok in the short run until my mag test kit comes in the mail.