This coldwater option in black comes complete with fitted halogen light unit, low-voltage air pump, airline & non-return valve, filter media, special highly porous gravel, fish food, water conditioner and set of instructions. Also included is a twin outlet 12v power adapter which allows connection of both the air pump and light unit. Your BiOrb can be converted to a tropical aquarium at a later stage by the addition of a heater pack. See the full range of BiOrb 60 swaptops here.