How to Choose an Aquarium Filter and Heater
How to pick the right filter type and heater size for your tank, with gentle options for bettas and advice for coldwater goldfish.
Fish & Aquatic Pets
Aquarium guides for goldfish, bettas, guppies and community fish, from cycling a new tank and choosing a filter to water changes and common fish diseases.
What Do Guppies Eat? A Simple Feeding Guide
A practical guppy feeding guide covering staple foods, feeding frequency, portion sizes, treats and common feeding mistakes.
Common Aquarium Fish Diseases: Ich, Fin Rot and More
How to recognize ich, fin rot, velvet, dropsy and other common fish diseases, and why testing your water comes before any treatment.
Why Is My Fish Gasping at the Surface?
A practical guide to fish gasping at the surface, covering low oxygen, poor water quality, ammonia, nitrite, gill disease and immediate aquarium checks.
How to Set Up a Goldfish Tank Properly
A practical goldfish tank setup guide covering aquarium size, filtration, cycling, water quality, temperature, decorations and ongoing maintenance.
Why Is My Goldfish Staying at the Bottom of the Tank?
A practical guide to goldfish bottom-sitting, covering normal resting behavior, ammonia and nitrite problems, stress, buoyancy issues and warning signs.
How Often Should You Change Betta Fish Water?
A practical guide to betta fish water changes, including how often to change the water, how much to replace and how to keep water quality stable.