Corals need Calcium just like we do, and if they aren’t doing well, after addressing light and water flow, Calcium is usually the thing we think we need to raise first.

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

There are many chemical-free, natural ways to rid a pond of green algae, so we’ve put together a useful guide detailing these to make things easier for you.

Facebook groups are filled with pond owners either seeing Herons around their ponds or actually taking fish. So how do you Heron proof a garden pond?

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.