correct calcium level

[celstar]

What would be the best way to maintain the correct calcium level in a 540 gallon sps dominated tank?

 

[anydarnthing]

calcium reactor, I have Geo reactor and its simple to set up and maintain keeps my calcium around 430-470 with 9 clams.

 

[celstar]

Thanks for the reply. Are there any other good reactors? what would be the best set-up for this 540+ tank?

 

[anydarnthing]

I have heard these are good but I haven't used them.
http://www.reefgeek.com/categories/calcium_reactors.html