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Just purchased this for my +-300 gallon tank. My livestock is non existent. Tiny little soft coral frags. It’s a new tank because I started with dead rock.
Anyway Calcium was 415ppm so I dosed 150ml of this and it raised it to 430ppm. I tested after 10 mins from dosing.
Already half the bottle is gone. I use natural sea water and planned to get this automated, but this dosing amount is really not doing it for me.
How do those massive aquariums manage their calcium and Alkalinity? They must have the most efficient system because they won’t have time dosing millions of ml per x time.
This is what I purchased: https://www.bulkreefsupply.com/64-oz-package-esv-b-ionic-calcium-buffer-system.html
I needed to use 300ml to raise Alk from 6.5 to 8.
Anyway Calcium was 415ppm so I dosed 150ml of this and it raised it to 430ppm. I tested after 10 mins from dosing.
Already half the bottle is gone. I use natural sea water and planned to get this automated, but this dosing amount is really not doing it for me.
How do those massive aquariums manage their calcium and Alkalinity? They must have the most efficient system because they won’t have time dosing millions of ml per x time.
This is what I purchased: https://www.bulkreefsupply.com/64-oz-package-esv-b-ionic-calcium-buffer-system.html
I needed to use 300ml to raise Alk from 6.5 to 8.
If parameters drop below NSW then go for it. Maybe try to keep your calc at 415/420 and alk at 6.5-7. That should keep it pretty close to what your NSW water comes in at.

