Aquarium Gravel in different colors

sera Gravel Blue 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.

This aquarium gravel has been dyed in a patented special treatment. The resulting coloured gravel is physiologically harmless and suitable for use in freshwater and seawater. The colouring pigments are bonded to the gravel resistant to abrasion.