How to Care for Your Aquarium

Keeping your fish healthy takes a lot of care. Get the expert advice you need to keep your aquarium perfect for your pets.

Coral tank with no substrate for undergravel filter
Is an Undergravel Filter the Right Choice for My Tank?
measuring glass aquarium
Know These Calculations When Building a Glass Aquarium
Goldfish (Carassius auratus) swimming in large rectangular fish tank.
How to Choose an Aquarium Filter System
Aquarium with blue, orange and blue-striped fish swimming in front of underwater leaves
Calculating How Many Fish to Keep in Your Aquarium
fish swimming in an aquarium tank
How to Size a Heater for Your Aquarium
fishes in a marine aquarium
Don't Kill Your Fish! Avoid These 11 Major Saltwater Aquarium Mistakes
fish swimming in an aquarium with algae in the background
How to Fight Algae Overgrowth in Your Aquarium
Japanese Rice Fish
Why You Need Aquarium Substrate and How to Choose It
Dirty Aquarium Water
Causes and Fixes for Yellow or Brown Aquarium Water
A child looking at a fish tank
Learn How to Plan an Aquarium Before You Buy It
small aquarium
Your Go-To Guide for Glass Aquarium Design
Fish Swimming In Aquarium
Choose the Right Size of Aquarium Equipment for Your Needs
Saltwater reef aquarium
How to Set Up a Saltwater Aquarium
Goldfish in an aquarium
Routine Freshwater Aquarium Maintenance
Goldfish swimming in tank
Common Solutions to Low Oxygen Levels
Cichlid tank decorated with live and fake plants
Manually Heat Your Aquarium If the Power Goes Out
Close-Up Of Siamese Fighting Fish In Tank
Pros and Cons of Sponge Filters in Your Fish Tank
Goldfish bowl
How to Remove & Prevent White Residue on Aquarium Glass
Nutrafin Aquarium Water Test Kit
Test Your Aquarium Water to Keep Fish Healthy
Close-Up Of Fish In Dirty Tank
What Is Old Tank Syndrome in a Freshwater Aquarium?
Lovely little girl admiring fish in aquarium
How to Buy the Perfect Aquarium for a Child
Aquascape aquarium
How to Design an Aquascape Aquarium (Plus What Aquascaping Is)
Girl using a chemical test kit to measure the quality of water in a home aquarium
The Elements You Need to Maintain in Aquarium Water
About 20 different fish swimming in an aquarium.
Should You Use a Double Tank Stand?
Close-Up Of Fish Swimming In Aquarium
Making a Simple Aquarium Canopy Using Plywood
Goldfish in a fish tank with green gravel
Why Gravel or Substrate Is Necessary for an Aquarium
Aquarium with plants and clean water and fish swimming
Cleaning Algae From Aquarium Plants
Koi in koi pond
Everything You Wanted to Know About Koi Ponds
Black and White Striped Fish in Fish Tank
Learn How to Quickly Reduce Nitrate Levels in Your Aquarium
Tropical fresh water aquarium front view with lush foliage plants and some fishes yellow Pterophyllum Scalare and Cardinalis neon
How to Cycle A Fish Tank
aquarium with fish and coral
How Do You Make a DIY Aquarium Chiller?
Aquarium
Replacing Aquarium Filter Media: What is the Right Order?
Fish tank with mollies and guppies
What Causes High pH in an Aquarium?
saltwater aquarium
What to Do After Your Aquarium Has Finished Cycling
Pebbles on a river bed. Reflections and ripples on the surface.
Can I Use Outdoor Gravel or Rocks in an Aquarium?
Using Activated Carbon in Aquarium Filters
Using Activated Carbon in Aquarium Filters
low-maintenance aquarium
How to Create and Maintain a Minimal-Maintenance Aquarium
Wall mounted aquarium with tropical fish
How to Wash New Aquarium Gravel
A healthy freshwater aquarium with a variety of fish and decor
How Does Limestone Affect the pH of Aquarium Water?
Kissing Gold Fish near aquarium gravel
Learn How to Replace Aquarium Substrate
low-maintenance aquarium
Determine the Perfect Timing for Your Aquarium Lights
angelfish in an aquarium
Acriflavine for Aquarium Fish
Saltwater aquarium
Getting Salt Creep off Your Glass Aquarium
Aquarium
The Right Way to Use Bleach for Aquarium Cleaning
Mother and son looking at aquarium
Is Grounding an Aquarium Necessary?
Aquarium with Goldfish
Making Sure to Keep Your Fish Cool in the Summer
Parrot cichlid swimming under venturi air outflow
Air Pump Accessories You Should Have for Your Aquarium
48" diy Aquarium Stand
How to Build a Simple DIY Aquarium Stand
Fish Tank
How to Repair Leaks in Glass Aquariums
Tropical fish swimming in aquarium outside kitchen
Become an Aquarium Water Expert With This Straightforward Guide
A diagram of how to clean stinky aquarium water
Identify & Treat the Causes of Smelly Aquarium Water
bubbles on top of fish tank
Are Foamy Bubbles in an Aquarium Bad?
air bubbles in aquarium
How to Manually Generate Oxygen in Aquariums
Nitrogen cycle in the aquarium
Nitrogen Cycle in Aquariums - Understanding the Basics
Fishbowl and an aquarium on a sideboard
What Is an Aquarium Drip Loop?
Young girl looking in fish tank
How To Add Water To An Aquarium
Power Filter
How to Effectively Clean a Hang On Back Aquarium Filter
Three- Lined Catfish, Resting on Lava Rock in Aquarium
How To Make Cheap DIY Filter Bags and Media for Your Aquarium
Aquarium Substrate
Suggested Substrate Setup for Live Plants
home aquarium in a modern home
Aquarium Heaters Must Have Proper Heat Distribution to Benefit Fish
Aquarium with multiple colors of fish
Solving Leaky Glass Aquarium Problems
Heater guard
Do I Need an Aquarium Heater Guard?
tang fish in aquarium
What is UV Sterilization in a Saltwater Marine Aquarium?
Fish aquarium
How Safe Are Multiple Heaters In a Marine Aquarium