Microscopic organisms in the aquarium.

The microscopic world is a fascinating one. As a teacher of biology, it never fails [...]

Feeding fish during the holidays.

Before considering why we should ensure our fishes are fed whilst we are away from [...]

Dropsy – what is it and how can it be treated?

One of the fish diseases dreaded by most fishkeepers is dropsy – an accumulation of [...]

The fish keeper’s emergency toolbox.

The laboratory in which I worked when I first graduated from university was an exciting [...]

Aquarium plants: beautiful and beneficial.

One of the most obvious benefits of aquarium plants is how beautiful they make your [...]

Algae in ponds.

Algae is the word that every pondkeeper dreads. Whether it’s single celled green water algae [...]

Why are my fish flicking and scratching?

When we closely observe the behaviour of our aquarium fishes we soon get used to [...]

Water quality – not water clarity.

At Tetra, our customers often ask what it is that they should be looking for [...]

Understanding your aquarium filter bacteria.

Bacteria belong to an entirely separate domain of life to animals and plants. They cannot [...]

How to prevent and treat pond fish diseases.

Keeping pond fish healthy should start with good water quality. Fish who live in ponds [...]