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hitchhiker

How to choose good live rock

A vermitid snail has hitchhiked on this liverock.
The first thing we should understand is that live rock is not actually alive, it is rock, sometimes coral skeletons or fossils of such, but it is not actually alive. This title refers to the bacteria, and other life that dwells on and within the rock. The positive affect of these on your tank is what you're looking to accomplish. Not all live rock is created equal though, and an aquarist should kn...
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