natural volcanic rock particles water purification fish tank bottom stone red volcanic rock filter material fish tank sand gardening aquarium stone special

powerful water purification + [increase oxygen content in fish tank + help fish hair color]]

[3-6mm 2.50kg + permeable bacterium cultivation + honeycomb porous]] [5-8mm 2.50kg + permeable bacterium cultivation + honeycomb porous]] [6-9mm 2.50kg + permeable bacterium cultivation + honeycomb porous]] [1-3cm 2.50kg + permeable bacterium cultivation + honeycomb porous]] [3-6cm 2.50kg + permeable bacterium cultivation + honeycomb porous]] [3-6mm 5.00kg + permeable bacterium cultivation + honeycomb porous]] [5-8mm 5.00kg + permeable bacterium cultivation + honeycomb porous]] [6-9mm 5.00kg + permeable bacterium cultivation + honeycomb porous]] [1-3cm 5.00kg + permeable bacterium cultivation + honeycomb porous]] [3-6cm 5.00kg + permeable bacterium cultivation + honeycomb porous]] [6-9mm 20g + permeable bacterium cultivation + honeycomb porous]]