Aquariums

Phosphates are a big problem for the reefkeeper. High phosphate levels fuel nuisance algae and retard coral growth.

Oscars are some of the most popular pet fish because of their character, intelligence and the way they interact with their owners, but are they a good choice for you?

Get into reefkeeping and one of the first things you’ll be recommended will be Clean Up Crew. Abbreviated to CUC online, but where do you start?

All new reefkeepers inevitably want the same thing - easy to keep corals that will add colour and movement to their tanks. Here's a list of beginner-friendly LPS corals.

Got Goldfish? Have questions about them? Read the Swell Guide to some of the most frequently asked questions and answers on Goldfish.

Catfish are an amazingly diverse group, named of course after their cat-like whiskers. They range in size from just a couple of cm to three metres in length.

Check our the most frequently asked questions on the ever-popular star of Finding Nemo, the Clownfish, and our experts answers to them.

Airpumps are really important pieces of kit for any aquarium for a number of reasons, but how do I know which one is right for my tank?

Small, colourful, undemanding, cheap, tetras have it all and few tropical community tanks run without them. Here’s what you need to know.