Welcome to Abyss Aquariums / Custom Built Aquariums

We are Sydney's BIGGEST Custom Built Aquarium makers. We custom make the tanks that others say cant be done.

Whether you're after a new fish for your aquarium or after a complete Custom Built setup you have come to the right place.

Abyss aquariums and Custom Built Aquariums have some of the most knowledgeable staff in the aquarium trade you are guaranteed to get the right information the first time.

We always have a wide range of fish in stock including Discus, Tropical's, Marine, Native's, Goldfish , African and American Cichlids.