Keep the water of your pond clean and clear with this 10 L volcanic stone Lava natural pond filter material from Ubbink. These natural grains act as effective filtration agents, promoting a healthy and balanced ecosystem. Quick clarifying effect: Lava is a natural volcanic stone for biological filtration. The granules or fragments are therefore of different sizes ranging from a diameter of 16 to 32 mm. They rapidly transform cloudy water into a crystal-clear oasis.Maximum bacteria-adhesive surface: The structure, which is both rough and porous, offers the best colonisation conditions for bacteria to rapidly obtain a healthy bacterial bed in pond water.Convenient 10 L package: The Ubbink pond filter grains come in handy with the 10 L packaging. They act as nature's purifiers, aiding in the removal of contaminants and contributing to the overall well-being of your pond's inhabitants. Good to know:The Lava pond grains are to be placed in a net inside the pond filter unit between the mechanical function foam filters and the biological function filter materials.
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