03-08-2007, 09:30 AM
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I recently took a bunch of rocks that I found along a river in the North Carolina to make a bunch of caves in my tank.
I was worried there might be some bacteria or something that would hurt my tank, but after a quick rinse off they don't seem to have had any effect. My only problem is those rocks are so dang heavy, I'm worried if they accidently fall (from either a fish bumping it or just accidently dropping one during setup) they could crack the glass on the bottom of the tank.
As for the caves... my fish love it. My puffer hangs out under the rocks 75% of the time, but in this picture he just happened to be out on a walkabout