Calcium too low

[jacknjill]

My calcium is aroun 300-325 different times ive tested for it. I read a couple threads on how to raise it, but im still confused. What is the best way to raise it and how long should i expect it to take? I want to start adding corals in the next week or so. Thanks!

 

[bmkj02]

http://www.advancedaquarist.com/issues/nov2002/chem.htm

 

[mrdc]

AH, I remember that article. I use the Seachem alk and ca powders. I test both before I start adding. Usually if my ca is low, my alk is high so I start by adding some ca per directions each morning with my topoff water. I do this for a few days and test again. I continue doing this until I need to add some alk and keep testing. Eventually, I get to a point where they balance out.