Wow, my LFS sells good rock for between 5 and 7. I always liked the Brasilian rock the best. I don't think you can get that anymore though. I have some nice Haitian rock in my tank that I got from a wholesaler in NJ. It was so fresh that a little baby trumpetfish came out of the rock when I first put it in my tank. Unfortunately, it died during the cycle. I never experienced any horrible macro algae or mantis shrimp. Just pleasant surprises. That is just my two cents.
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