silly question...

[kevin4052002]

Calcium is included in your salt mix. *thumbsups

 

[Joe Fish]

I assume this is why more water changed would be needed for heavy reef tanks? To make sure the cal level stays where it should.

 

[JeLeAk]

i would think if you have to do water changes frequently on a reef only to supplement calc, maybe it would be cheaper to just buy a bottle of calcium buffer

i should go figure out the price per gallon of saltwater... as in the water itself

 

[wayne]

If all you have is softies then you don't really need to do anything bar water changes. Water changes are always a subject of debate..... but if you have a large reef with many stony corals, clams, desire for calc algae then water changes are unlikely to be adequate.
What's cheaper, water changes, or supplementing Ca with commercial 2 part ca additives is a good q.