1250 mag is only right if ur nitrates r down to nill.... And than every thing else will maintain on it's own too with just a regular dosing Like alk and cal.... If ur nutrients r way too low than only u can adjust ur reef water similar to natural sea water.... Again if ur nutrients r low and ur alk and cal is over 8dkh and 420 than it's gone start stressing ur live stock slow by slow...


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