biOrb Marble Pebble Packs can be used to decorate or cover the ceramic media without obstructing the flow of water into the filter. These large solid marble pebbles are available in red, green or black. Once in the water, the colour of the pebbles deepens and shines.
- Solid marble pebbles will not cloud the water
- Rinse before using to remove dust
- Suitable for all aquariums