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Rocks placed in the aquarium's filtration system. Their micro-porous structure promotes the growth of nitrifying bacteria. They clean the water and reduce the need for frequent changes. The insert is designed to be placed in the aquarium's filtration system and consists of 10 pebbles.
Features:
Specifications are collected from official manufacturer websites. Please verify the specifications before proceeding with your final purchase. If you notice any problem you can report it here.