petsmart dry marine rock

Is it safe to use petsmart dry marine rock? I want to add it to an already established tank. I've searched but no conclusive answer. If I can use it, what would be the best way to introduce it?

CaribSea® South Seas Base Rock - Decorations - Fish - PetSmart

 

Their own caution "May raise pH levels" gives me cause for concern. Rock should not alter pH unless it's leaching something into the water. I'd suggest ordering from a reputable dealer rather than a generic chain box store.

 

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Check out Macrorocks, Reefcleaners, Aquascapers, and BRS (Pukani will need some acid baths for phosphate removal) for dry rock.

 

I went with Marcorocks. If you buy the package deals, they are very reasonable. I bought 40lbs of dry rock and 40lbs of course aragonite for 120 dollars. I really like the looks of the rock. I got 9 pieces of football sized rock, which made for easy aquascaping.

 

calcium based rocks will raise ph from neutral..I used this rock in my reef tank and it is great. I ordered it from drs foster and smith though. Cheaper that way. The rock is very clean and very porous. The ph warning is so people don't put this in a fw tank

 

Thanks for all the advice and suggestions everyone.

 

That warning actually doesn't surprise me at all. It is probably there for people who think it would be cool to put it in a fresh water tank.

CaribSea "manufactures" a number of aragonite-based products. I have used CaribSea sand on multiple occasions and have been happy with it.