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sera Gravel Black is CO2 proof and neutral towards water, i.e. it has no influence on water parameters and does not tint the water. Due to a grain size of 2 - 3 mm, plants can grow on excellently. Due to being round grained, the colored gravel is also suitable for keeping bottom oriented fish such as catfish. sera Gravel Black is evaluated according to DIN 38415-6/EN ISO 15088 by an independent institute, and is proven to be pollutant free. It is therefore also suited for keeping and breeding sensitive animals.
sera Gravel Black consists of carefully selected, natural materials that are free of harmful chemicals and dyes. This makes it safe for all aquarium inhabitants, including fish, invertebrates and plants. Its special shape and structure also promote effective permeability and provide an ideal habitat for beneficial micro-organisms that contribute to biological filtration. In addition, Sera Aquarium Gravel supports plant health by providing a stable base for roots and allowing optimal nutrient circulation. This promotes plant growth and development, which in turn contributes to the overall quality and clarity of the aquarium water and minimises the risk of unwanted algae growth.
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