The air stone, located at the base of the aquarium, breaks up the flow of air into the aquarium into a mass of bubbles. After a time the air stone can become blocked by calcification, especially in hard water areas, reducing the flow of air into the aquarium. Replacing the air stone every few months will keep your aquarium bubbling away nicely. In some hard water areas it may be necessary to replace the airstone more frequently, but once every 6 months should be sufficient for most owners. Replacing the airstone is extremely easy. The airstone is location in the center of the aquarium under the filter cartridge, simply remove the filter cartridge and you will be able to locate the airstone. A replacement airstone can simply be pushed into place. Each biOrb Air Stone accessory pack includes one replacement air stones.

The biOrb Timer has been designed as your personal reminder. You will never forget to feed your fish with this stylish accessory. The automated timer flashes to remind you when you need to feed your fish, carry out a water change and change the filter cartridge.

Some fish like to try and squeeze themselves into the most unlikely places. Just in case one of your fish enjoys this behaviour we have made a top for the bubble tube; which prevents fish from getting in while still allowing bubbles to get out. Swimming down the bubble tube will not harm most fish, however if the fish is too large they may get trapped. Please obtain good advice when purchasing fish. The ceramic media used in Reef One aquariums does not provide a suitable substrate for the majority of catfish and bottom feeding species.

The heater pack transforms the biOrb or biUbe into a perfect habitat for tropical fish, allowing a wider choice of colorful fish. An aquarium heater can be accommodated with the aid of the Reef One heater stand. The aquarium can then house small tropical fish. A snap out section in the biOrb light unit provides a gap into which the lead from the heater can rest, keeping the lead tidy while allowing the light unit to remain snugly fitted in the top. The Heater Pack contains a 50 watt heater, glass thermometer, sample of tropical fish food and heater stand. The heater stand enables the fixing of a heater onto the curved inside of the biOrb. Although designed for use in the biOrb, the heater stand can be used in most aquariums if desired.

Heater Stand - for use with aquarium heaters less than 20cm in length. Enables a heater to be safely fitted to the acrylic surface of your biOrd/BiUbe.

The tropical marine environment is one of the most colorful and beautiful locations in the world. Recreating this underwater paradise in an aquarium has traditionally been very complicated and expensive. The latest innovation from Reef One is a "one box solution" that eliminates the complexity and finally makes marine fish keeping easy. The Marine Conversion Kit is an exciting entry into the fascinating world of marine fishkeeping. Making it possible for anyone to create a Marine biOrb. Compatible with any Tropical biOrb or biUbe Features : ?Converts any Tropical biOrb or biUbe into a Marine Aquarium. ?Easiest step-by-step kit for setting up a marine aquarium. ?No additional equipment or chemicals required. ?Keep a variety of colourful small marine fish and cleanup crew. ?Unique marine cartridge system keeps maintenance simple. ?Dedicated UK Customer Support to help guide you through any questions. Traditionally large marine aquariums include a complicated array of equipment from Power Headers to Protein Skimmers, not to mention the bewildering assortment of chemical additives and adjusters. However, the Marine Conversion Kit allows you to simply change your tropical biOrb or biUbe into a complete Marine aquarium. The Marine Conversion Kit is designed to allow you to effectively keep small marine fish and a variety of other marine creatures such as hermit crabs, shrimps and marine snails. A Marine biOrb is your fascinating enter into the world of marine fishkeeping. Box Content: The Marine Conversion Kit includes all the items you will need to convert your tropical biOrb or biUbe into a marine aquarium. ?4x unique porous modular artificial live rock. ?Premeasured reef salt packs for easy setup. ?Unique marine cartridge - Improve water quality and simplify maintenance. ?2x Medium Easy-plants. ?Calibrated Hydrometer/thermometer. ?Halogen Light Gasket. ?Water level measure - to simplify setup. ?1x bottle of Instant aquarium 2 (Beneficial Bacteria Booster). ?Water conditioners. ?High quality Marine fish pellet food sample pack. ?Step-by-Step setup guide. ?Water Testing Card/Guide The unique shape of the biOrb also greatly reduces evaporation and salt-creep, keeping the water more stable. The Marine Conversion Kit overcomes the complicated challenges traditionally associated with creating a marine aquarium, allowing you more time to focus on the wonderful marine creatures you can keep. For over 3 years the Marine Conversion Kit has received extensive consumer testing with non-fishkeepers to ensure that the process of creating and maintaining a marine aquarium is as simple as possible. A Marine biOrb is your simple way of keeping a variety of wonderful marine fish and critters.