An aquarium is a contained environment where fish, plants, and other aquatic animals live. Whether you're setting up your first tank or expanding an existing one, understanding the basics helps you create a space where aquatic life can thrive. This category covers what goes into building and maintaining an aquarium—from tank size and filtration systems to water chemistry and the types of animals different setups can support.
The articles here answer practical questions about aquarium care: how to cycle a new tank before adding fish, what equipment you actually need versus what's optional, how often to change water and why, and what conditions different species require to survive. You'll also find information about common problems like algae growth and cloudy water, and how to troubleshoot them.