Aquarium curators Jamie and James are keeping a blog as they work on the redevelopment of the Aquarium's Fijian Reef display.
The rockwork in the reef was finished this week, which means the maturation period for the filter was able to begin.
All aquarium filters (including the ones you keep at home) rely on living bacteria to help break down the waste produced by the fish and keep the water clean. When you start up a new aquarium you have to make sure enough time is given to allow the numbers of bacteria to grow. It is also important to add new fish to the aquarium slowly as, with each new fish added, you need to grow more bacteria - this is why it will take us until January to completely fill this display with fish!