Specification: Material: Activated carbon Colour: Black Diameter: About 1-5cm Features: It has a very strong adsorption capacity. Reduce the frequency of water changes, prevent fish from getting sick. Harmful substances, odors and heavy metals in aquarium water can be quickly and effectively removed, so as to obtain direct and rapid water quality improvement. This product has been specially processed, so the pores are more dense porosity and the water purification efficiency is faster. Usage: .
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