Plastic plants in Red and Blue styles to add colour to your biOrb and give your fish a more interesting environment. Plastic plants designed for use in the biOrb available in two different colour packs: Blue/Purple Red/Pink Each pack contains two medium sized plants. Instead of a large plastic base these plants have a smooth weighted ball which is easier to fit into the ceramic media in the biOrb. The round ball keeps the plant in place and prevents it from floating. Use a number of packs in the same colour to create a striking effect or mix and match with other styles to suit your taste.