Texas Holy Rock

[Chameleon Bob]

Can texas holy rock give off calcium? My calcium levels are a little high and I'm trying to narrow down the cause.

[zhenya]

Can texas holy rock give off calcium? My calcium levels are a little high and I'm trying to narrow down the cause.

I don't believe so. Ph has to be really low for the rock to dissolve to release calcium, providing that the rock you mention is indeed a calcium carbonate type rock. If I remember correctly this partilular rock is calcite, however it is still need to dissolve to be a problem. For that ph needs to drop below 7.

[Chameleon Bob]

thanks zhenya my ph is 8.3 so it can't be that. Guess I better test my tap water again.

[Ninong]

Haha! It's not "holy" rock, it's "holey" rock. It has holes in it but I don't believe it's blessed by the clergy.

[Ninong]

If I remember correctly this partilular rock is calcite, however it is still need to dissolve to be a problem. For that ph needs to drop below 7.

Aragonite begins to dissolve when the pH drops below 7.7 and calcite begins to dissolve when pH drops below 7.4, but you're right, it would have to drop well below 7.0 to get any significant calcium benefit -- which is why we inject CO2 into calcium reactors.

I didn't know Texas holey rock was being used in reef tanks. I knew some people used it for freshwater African rift lake tanks but I didn't know it was popular for reef tanks.

[twisted]

thanks zhenya my ph is 8.3 so it can't be that. Guess I better test my tap water again.

maybe the tap water is the prob? is it run through a ro?

[Chameleon Bob]

Well I had my LFS come out and look at my setup and tested everything. He thnks it's the holy rock also, hopefully it'll drop since i took it out.

Twisted yes it is ro water.