GHL 4 doser:
alk, calcium, magnesium and vinegar

Vinegar because I plan to add a lot more fish and want to keep nitrates very low.

I am not sure if its a new tank but I am dosing mg ca and alk on a vertex. I was going through 180 ml alk, 160 ca and 120 mg daily....now it seems to have stabilized at 150 alk, 140 ca and 120 mg.