Choosing an Aquarium Filter: What Matters More Than the Brand
Aquarium filter performance depends on who lives in the tank, the biological media, water flow, maintenance, and the real waste load. A simple filter can be the right choice, while a premium one can fail in the wrong setup, so understand the job before paying for features you will never use. Fish & Aquariums › Equipment In This Guide What does an aquarium filter actually do? Why is biological filtration the part that matters most? Are canister filters always better than sponge filters? How should you clean or replace filter media? Do you need UV sterilizers, smart sensors, or automatic feeders? What should you plan for if the power goes out? How should you compare equipment honestly? How do you choose a filter you can maintain properly? What belongs on a filter-cleaning checklist? How do you make an outage plan before you need one? The bottom line Sources & further reading Photograph: Kevin A. McGill (kevinmcgill) / Wikimedia Commons, CC BY-SA 2.0 . Resized and headline...