Check this out!

[kaz]

does this type of rock work in aquariums?

http://search.ebay.com/search/searc...ftrt=1&ftrv=1&saprclo=&saprchi=&fsop=2&fsoo=2

 

[brant]

The only thing I see that it would do is raise your GH and KH as it is limestone and is a high consatration of calcium it would probably work well in a cichlid tank or mabye even saltwater.

 

[kaz]

got you thanks for that info.