500g Crushed Coral Aquarium Filter Media, Natural pH Buffer Supports pH

• Natural Water Conditioner: The main component of crushed coral bone is calcium carbonate, which continuously and slowly releases alkaline substances into the water, effectively raising and stabilizing the pH and hardness (KH) of the water, preventing acidification.
• High-Efficiency Bacterial Growth Filter Media: Aquarium Crushed Coral has an extremely rich microporous structure on its surface and inside, providing a huge attachment area and breeding ground for beneficial microorganisms such as nitrifying bacteria. This significantly enhances the aquarium's biological filtration system and efficiently decomposes harmful substances in the water.
• Multi-functional and Flexible Use: The 500g package can be used as filter media in a bottom filter, as substrate at the bottom of the aquarium, or even for DIY reef aquascaping, offering diverse possibilities.
• Excellent Physical Adsorption: In addition to cultivating bacteria, the porous nature of Aquarium Crushed Coral can also physically adsorb some suspended impurities and tiny particles in the water as it flows through, playing a role in purifying the water and maintaining its clarity.
• Safe and Environmentally Friendly Material: Aquarium Crushed Coral, as a pure natural marine fossilized skeleton, contains no organic matter and will not decompose during use, thus not polluting the water. It is safe and non-toxic to fish, shrimp, and other aquatic organisms.

Product description 500g aquarium crushed coral, reusable aquarium filter media small coral stones for fish tank filtration and water quality improvement tank 1.1lb Funktionen: 1.Aquarium Crushed Coral regulates and stabilizes water, naturally raising and stabilizing the pH and hardness of the water, creating a perfect home for hard-water-loving organisms. 2.Its rich microporous structure provides a super-breeding ground for nitrifying bacteria, effectively strengthening the aquarium's ecological defenses. Spezifikation Produktgröße: 19 x 13 x 5 cm Produktgewicht:505g Größe der Verpackung:19 x 13 x 5 cm Gewicht der Verpackung: 505g Farbe:Beige Material:Coral Stones Paket： 1×500g aquarium crushed coral Precautions: Strictly distinguish between suitable species (most important): Coral skeletons significantly increase water hardness and alkalinity. It is absolutely unsuitable for keeping fish that require a slightly acidic, soft water environment (such as tetras, discus, and angelfish) and most aquatic plants. Using it in these tanks can cause fish and shrimp to become sick or even die. Precisely control the dosage: Crushed coral skeletons release minerals quickly; excessive dosage can easily cause drastic fluctuations in water quality (pH spikes), causing irreversible damage to fish and shrimp. It is recommended to add it gradually and closely monitor water quality test data. Oxidation and blackening resulting from long-distance transport are normal phenomena. 1.Repeated rinsing and washing: Since the black material (iron oxides and associated silt/sediment) primarily adheres to the surface of the granules and within their pores, it is recommended that you place the coral sand in a basin and repeatedly rub and rinse it—using either water from your aquarium or tap water—until no obvious black impurities are visible in the runoff and the water runs relatively clear. Soaking in warm water (recommended): To accelerate the release of impurities trapped in the pores, you can soak the cleaned coral sand in warm water for 12 to 24 hours, changing the water several times during this period. Directions not