I think it might depend on your rock when you dry it. Mine didnt seem to leach anything. I through my "dead rock" in the tank, Put a few pieces of liverock from my other tank into my sump, It wasnt much just a couple pounds and waited it out a few weeks. I liked that after the expences of getting a new tank set up It was a bonus not having to part with a big chunk of money in rock also. If your tank is clean right now I wouldnt worry about your rock leaching. But like previously said, you can totaly get $4 a pound live, Dead to someone else its not worth much. For personal use, I prefer it dead. It seems like everytime I buy rock off someone it comes with some hidden pest.
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