Cleaning a fish tank is a delicate process. Discover how to change water without throwing a tank's ecosystem into disarray.

"Hearst Magazines and Yahoo may earn commission or revenue on some items through the links below." Fish are arguably the easiest pets to have: They don’t need to be walked, they don’t eat a lot, and ...

Keeping your fish tank clean is one of the most important things you can do for the health and happiness of your aquatic pets. A clean tank supports a stable environment, prevents waste buildup, and ...