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Tetra Whisper Bio-Bag Disposable Filter Cartridges, Medium
More options available
$9.99 to $17.99
$7.99 to $14.39 save up to 20%
Penn Plax Cascade 1000 Canister Filters

$66.69 save 49%
Fluval 406 External Canister Filters

$199.99 save 17%
Fluval 306 External Canister Filters

$178.49 save 15%
Aqueon QuietFlow 55/75 Aquarium Power Filter

$35.99 save 28%
Zoo Med Turtle Clean 511 Turtle Tank External Canister Filter

$66.49 save 26%
Marineland Emperor Filter Systems, 400B

$58.39 save 10%
Fluval 106 External Canister Filters

Petco Power Filter 30G
$19.99 save 20%
TetraPond Pond Filtration Fountain Kits

$80.99 save 15%
AquaClear 70 Aquarium Power Filter
$49.99 save 9%
Tetra Whisper Internal Power Filter 40i
$23.99 save 20%
Marineland Penguin 350 BIO-Wheel Power Filter

$39.99 save 20%
Fluval Bio-Foam Inserts, for 304-306 & 404-406 Canister Filters
$7.79 save 40%
Aqueon QuietFlow 50 Aquarium Power Filter

$33.99 save 15%
Penn Plax Cascade 500 Canister Filter Bio-Sponges

$5.99 save 40%
Penn Plax Cascade 700 Canister Filters

$90.19 save 22%
AquaClear 50 Aquarium Power Filter
$37.99 save 12%
Tetra Whisper PF10 Filtration System

$14.39 save 20%
Aqueon QuietFlow 20 Aquarium Power Filter

$21.24 save 15%
Aqueon QuietFlow 30 Internal Power Filter
$33.99 save 15%
Penn Plax Cascade Canister 500 Filter Bio-Floss
$8.99 save 40%
Aqueon QuietFlow 30 Aquarium Power Filter

$25.49 save 15%
TetraPond Water Garden Pond Pump Cylinder Pre-Filter Replacement Pad

$4.49 save 10%

Aquarium Filters, Fish Tank Filters, and Aquarium Water Filters for Good Water Quality

Preserve the beauty of your tank and promote the health and happiness of your fish today with the best fish tank filters available at Petco. Ensuring the health and vitality of your pet fish, live plants and other marine invertebrates means maintaining good water quality. Without a filtration system, the ammonia and waste produced by your fish will build up and become toxic and even poisonous. Various types of aquarium filters help to remove wastes, excess food and any decaying matter from the water. By converting fish waste and ammonia into a relatively less harmful substance-nitrate, biological aquarium water filters are a must for all aquariums. In addition to maintaining the health and well-being of your fish, aquarium filters also help to keep your water clear.

From under-gravel and canister filters to external and internal filters, there are various kinds of aquarium filters available for you to choose from. It is important to select a filtration system that will work with the size of your tank, otherwise it may be ineffective. Of the many options available, it's also important to learn which types are recommended for fish that naturally produce more wastes, such as many species of Goldfish. While most under-gravel aquarium water filters are easy to use, some may require more maintenance than most other power filters. Meanwhile, many aquarists prefer hang-on-tank power fish tank filters as they are relatively easy to use and require simple routine maintenance.

Most canister aquarium filters are recommended for larger tanks housing many fish as they typically last longer between routine cleanings than most hang-on-the-tank fish tank filters. When it comes to selecting your filtration system, be sure to keep your tank size in mind, along with the types of fish you will house as well as your personal preference in routine filter cleaning and maintenance as not all aquarium water filters work the same. Equipping your tank with a sufficient filtration system will lead to better water quality, which makes for happy, healthy and stress-free fish!