lava volcano
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Red Volcanic Stone Fish Tank Filter Material
1. Volcanic stone is used as the bottom of the fish tank to run water, absorb bacteria, promote metabolism, and stabilize water quality. 2. The volcanic stone that has been simply polished has no sharp edges and corners, which will not cause damage to the fish. 3. The bright color of volcanic stone has a very good color-attracting effect on some high-quality ornamental fish.
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