A dramatic and colourful centrepiece to your biorb that mimics real life coral reef formationsr simply place into the aquarium the weighted bottom will ensure the coral stays uprightr mix with colour kelp and sea lilies of the same or different colours to create your stunning displayr suitable forr r biorbs 30l 60l 105lr life 30l 45l 60lr flow 30lr biube and biube purer halo 30l and 60l