Hydor Media Non-Toxic Ceramic Filter Cylinders (Gray) (One Size)

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- Inert ceramic cylinders with exceptionally porous surface. - Provides optimum conditions for high colonisation of beneficial bacteria, breaking down ammonia and nitrite in water. - Unique cylinder design does not obstruct water passage, making this media ideal for use with Hydor Prime external filters in fresh water or marine aquariums. - Use as directed by filter manufacturer. - These non-toxic ceramic cylinders can be rinsed in warm water. - Do not use soap or detergent. - Size:One Size