Who Gives A Fish Forums

found a few rocks that caught my eye.
ran the vinegar test and it all checked out.
anything else i should look into or is the acid test pretty conclusive?
if that's all good, i'm assuming they're safe to use once they're cleaned up?

I'm always pretty cautious when it comes to adding new rocks to my tank. I've got a bunch from my neighborhood in there already, and I've learned to test them thoroughly before adding them in. I like to fill a bucket with water, check the parameters, then leave the rocks in for a day to make sure they don't affect the water quality.