A Black Friday "deal" is often a normal price next to an inflated list price. Here a aquarium canister filter only counts as on sale when its checked price is at least 15% below its own typical price over the last 90 days, from our price history. The best-rated models are listed too, since many are good value without a sale. See deals in every category.
Prices were last checked November 9, 2026. Product prices and availability are accurate as of that date and are subject to change; the price and availability shown on Amazon or the retailer's site at the time of purchase apply. As an Amazon Associate we earn from qualifying purchases.
On sale now
No aquarium canister filter rated 3.8 or higher is 15% or more below its typical price at the last price check (November 9, 2026). Prices are rechecked through the sales; this list updates when one drops. See the recent price changes.
Best buys at their normal price
The top-rated models in each tank size. A sale on one of these is worth more than a big discount on a weaker model.
Best Canister Filters for Aquariums up to 75 Gallons
- Fluval 207#1 of 8Full review
A strong value for 20 to 45 gallon tanks: generous media space and low power draw at about the price of the smaller 107.
Amazon $153.94$153.9420-45 gal206 gal/h3.1 L - OASE BioMaster 2 250#2 of 8Full review
A convenient, well-built filter for tanks up to 70 gallons, at its best for owners who want a quick-rinse pre-filter.
Amazon $229.99$229.99Up to 70 gal250 gal/h4.4 L - Fluval 107#3 of 8Full review
A small, quiet canister for 10 to 30 gallon tanks. The 207 costs about the same and holds more media, so the 107 makes most sense where cabinet space is tight.
Amazon $152.99$152.9910-30 gal145 gal/h2 L
Best Canister Filters for 76 to 150 Gallon Aquariums
- OASE BioMaster 2 350#1 of 6Full review
A top choice for 55 to 90 gallon tanks, pairing lots of media with the easiest pre-filter cleaning here.
Amazon $249.99$249.99Up to 90 gal300 gal/h5.6 L - Fluval 407#2 of 6Full review
The pick of the 07 range for 50 to 100 gallon tanks, with more media space for its rating than most rivals.
Amazon $256.99$256.9950-100 gal383 gal/h6 L - SunSun HW-304B#3 of 6Full review
A cheap high-flow canister with a UV light built in, for owners fighting algae who accept sparse published specs.
Amazon $167.49$167.49Up to 150 gal525 gal/h-
Best Canister Filters for Aquariums over 150 Gallons
- Fluval FX6#1 of 7Full review
The flow king for very large tanks, at the lowest cost per rated gallon. Many owners pair it with a second filter on tanks near its rating.
Amazon $406.99$406.99Up to 400 gal925 gal/h5.9 L - EHEIM Professionel 4+ 600#2 of 7Full review
A premium square canister for tanks up to 160 gallons, with lots of media and thoughtful maintenance features.
Amazon $329.99$329.99Up to 160 gal330 gal/h6.5 L - Fluval FX4#3 of 7Full review
A powerful, efficient filter for big tanks, with a handy water-change valve. Treat the 250 gallon rating as generous and size by media need.
Amazon $337.99$337.99Up to 250 gal700 gal/h3.9 L
