Biorb Colour Ball Set is suitable for any aquarium. An easy way to decorate your aquariums and give your fish a more interesting environment. A range of plastic plants designed for use in the biOrb. Plastic plants arranged in a small ball shape with a ceramic weight on one side so they can nestle easily into the ceramic media on the base of the biOrb. Supplied in a pack of three balls with a purple, orange and red ball in each pack. Suitable for all aquariums. Ball height 6cm, base width 4cm.