Strontium?

[JR8999]

I've seen calcium supplements that include Strontium. Should I use that or straight Ca? Is there a test for Strontium?

Thanks.

[bertoni]

Salifert has a strontium test kit, although it's not for the faint of heart. I gave up on dosing strontium, and never saw a difference. This article discusses strontium:

http://www.advancedaquarist.com/2003/11/chemistry

The animals we keep in our tanks don't seem to require it.