ca real low

[Hamp]

So my ca is real low. 270, and my kh is 9. I just got my bulk reef supply ca in and I am using b-ionic alk. I have a 55g tank. So I need to add close to 40 oz of ca to my water, and not exceed 50ppm. How much should I add, and does anyone have the link to the calculator?

[Randy Holmes-Farley]

Here's the calculator:

Reef chemicals calculator
http://home.comcast.net/~jdieck1/chem_calc3.html

and this may help:

Solving Calcium and Alkalinity Problems
http://www.advancedaquarist.com/issues/nov2002/chem.htm