guys,
that's why i go for Seachem reef advantage calcium. coz inside got Magesium and strontium ( all in one ). i know we have maintain mag in order to get cal.
i previous using the sperate cal and mag, but i found out that the mag tester are damn expensive. in-order to do it correct way, i got for S.reef adv cal.
ok, here are what someone told me , but i am not sure weather i believe or not.
here is the story, my friend suspect that my coral has been lack of calcium for some time, so whenever i added the cal, it will consume as much as it can but when it's full , then i can get the 400 mark cal in my tank. is that true??