Play Sand as a sandbed

The not for aquarium use is going to be on any bag of calcerous sand. As it is not safe for general aquarium use. The calcium will cause the pH and hardness to rise. This is what we want in a reef tank but very bad for people trying to breed discus. Since it isn't perfectly innocuous it's going to get a warning label about aquarium use.
 
Plus, they can slap a different label on the same sand, sell it at your LFS and charge 10X the money!
 
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