Chocolate-colored catfish

Algae: which kind and what to do3 min read

The most common algae in the aquarium, how to recognize them, and why the cause is almost always an imbalance of light and nutrients.

How to set up a South American aquarium4 min read

Soft, acidic water, subdued light, sand, roots and fallen leaves: how to set up a biotope aquarium from the Amazon and the rivers around it.

How to add new fish4 min read

From the store to the tank: how to get the fish used to your water, why you should add only a few at a time, and what to watch for in the first few days.

Quarantine for new fish3 min read

Why new fish should live in a tank of their own for a few weeks before they move in, what you need, and what to look for.