HOW TO: Aquarium safe rocks TUTORIAL

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Aquarium safe rocks. A basic break down on how to figure out which rocks are safe for your aquarium.
A lot of times, aquarium hobbyists like to find their own rocks, yet a common question they will ask is: Which rocks are safe for my aquarium.
This is my way of figuring out what you can and probably shouldn't use, by using a process of elimination by way of simple testing.