There are coral only reef aquariums. There are fish only aquariums. There are mixed [tag-tec]reef aquariums[/tag-tec]. There is one essential item that must never be overlooked. The pet dog needs it. The aquarist needs it. The aquarium livestock need it.
Oxygen is an essential item in the aquarium, I don’t think anyone would argue about that. Yet this is one item that many aquarists do not consider when they are at the planning stage. [Read more]