Safe to use Rocks from Beach (ocean) in Freshwater?

Nope, no need for the salt.
 
Okay, went to the beach today with my sons and collected a 5 gallon bucket full of various sized rocks from the beach. It was fairly mild weather, about 30 F, so we stayed longer than expected.

I put about 1/3 the rocks in a very large pasta pot, and I'm boiling them now. I dont really have room in the current 29G for all these rocks, but I plan on starting a 55G in the next few months in my office, and these will come in handy.

Thanks for into info in regards to "cooking" the rocks, I'll post some pics if I ever get them into a tank.
 
Here are some pics of the rocks boiling. Not too interesting, but I was bored.

jan2009082lr2.jpg

By geekpryde, shot with NIKON D70 at 2009-02-01

jan2009085qe6.jpg

By geekpryde, shot with NIKON D70 at 2009-02-01
 
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