... can avoid a territorial war with an adjoining encrusting organism by spreading via a tendral over it to a nearby vacant space. Once the second colony is established the connecting tendral will break.
The Marine Aquarium Society of Victoria (MASOV) is a society for all those interested in marine aquaria. It has been in existance for around 30 years. Members are not limited to just an interest in tropical reef aquariums, but also covers temperate fish, corals and invertebrates.
There is a wealth of experience in the members over a wide range of areas within the hobby. If you are located in the state of Victoria, then consider joining up. There are a number of advantages of being a member of a society, including networking with others in the hobby, being able to ask questions of those that have had the same sorts of issues, access to some generous discounts with various businesses, and numerous social events.