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Is "Blue Stone" ok?

815 Views 2 Replies 2 Participants Last post by  beachtan ... fault.aspx

right column, second photo down.

Is this stone ok? because I'm reading "BlueStone" is sometimes feldspar sandstone or something and it can leach something into the water? I just bought quite a bit of this thinking its fine and now am nervous to use it...

I was able to break the blocks if I hit them just right on a sharp edge, and I can rub them down on the concrete to smooth the edges - what remains on the concrete can be rinsed away-it ends up looking like a gray mud... (so this does seem like a sandstone)

I REALLY want to use this since it stacks so nicely!! Does anyone know FOR SURE if this is ok?
I was hoping to load up the tank tonight...
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I use it, no problems.
Thats all I needed! This stuff is GREAT! I love being able to break it, stack it, rough it up - wish i'd found it sooner! Plus its not so rough that it'll tear up my fish like the lava rock!! :thumb:

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