10 Best Aquarium Filter

Updated on: September 2021

Best Aquarium Filter in 2021


Marineland PF0350B Penguin Power Filter, Upto 75 Gallons, 350 GPH

Marineland PF0350B Penguin Power Filter, Upto 75 Gallons, 350 GPH
BESTSELLER NO. 1 in 2021

Marineland Penguin Bio-Wheel Power Filter, Multi-Stage aquarium Filtration

Marineland Penguin Bio-Wheel Power Filter, Multi-Stage aquarium Filtration
BESTSELLER NO. 2 in 2021
  • WITH ROTATING BIO-WHEEL: Patented Bio-Wheel technology provides excellent wet/dry biological filtration.
  • MULTI-STAGE FILTRATION: Delivers mechanical, chemical and biological aquarium filtration to maintain a clean aquatic environment.
  • COMPATIBILITY: Use with Marineland Rite-Size Filter Cartridges (see individual filter for sizing recommendations).
  • FIVE SIZES: Available in 75 GPH, 100 GPH, 150 GPH, 200 GPH and 350 GPH sizes.

Tetra Whisper In-Tank Filter 40i with BioScrubber - 20-40 gallon (25818)

Tetra Whisper In-Tank Filter 40i with BioScrubber - 20-40 gallon (25818)
BESTSELLER NO. 3 in 2021
  • UNIVERSAL DESIGN: Tetra Whisper 40i Internal Filter is an all-in-one air pump and water filter system.
  • INTERNAL FILTER: Mounts on the inside of your aquarium with clip (included).
  • CATCHES DEBRIS: Dense, dual-sided mesh filters debris and fish waste.
  • AERATES WATER: Air-driven design filters up to 170 GPH while oxygenating water.
  • CONVENIENT DESIGN: Uses large easy to change Bio-Bag cartridges; filter mounts inside aquarium, making it possible to place tank flush against the wall.
  • Age Range Description: all ranges
  • Included Components: Whisper In-Tank Filter 40i (upto 40 Gal)

Tetra Whisper Bio-Bag Disposable Filter Cartridges 12 Count, For aquariums, Large, Unassembled

Tetra Whisper Bio-Bag Disposable Filter Cartridges 12 Count, For aquariums, Large, Unassembled
BESTSELLER NO. 4 in 2021
  • UNASSEMBLED REPLACEMENT CARBON FILTER Keeps aquarium water crystal clear – removes odors and discoloration
  • CATCHES DEBRIS Dense dual-sided mesh filters debris and fish waste
  • FITS TETRA WHISPER WATER FILTERS Color coded to make it simple to remember which replacement cartridge size to purchase
  • CONVENIENT Easy to assemble and easy to replace
  • USAGE Change monthly or sooner if needed

Aqua Clear - Fish Tank Filter - 5 to 20 Gallons - 110v

Aqua Clear - Fish Tank Filter - 5 to 20 Gallons - 110v
BESTSELLER NO. 5 in 2021
  • Refiltration system that offers superior contact time with filter media and energy efficient pump lowers operating costs
  • Quick and Easy Installation
  • Filtration volume is upto 7 times larger than comparable filters
  • Comes equipped with AquaClear Foam, Activated Carbon and BioMax and Cycle Guard for continuous biological filtration and superior water quality
  • 2 year warranty; Ideal for aquariums upto 20 gallons

Marineland Penguin Bio-Wheel Power Filter 200 GPH, Multi-Stage aquarium Filtration

Marineland Penguin Bio-Wheel Power Filter 200 GPH, Multi-Stage aquarium Filtration
BESTSELLER NO. 6 in 2021
  • WITH ROTATING BIO-WHEEL: Patented Bio-Wheel technology provides excellent wet/dry biological filtration.
  • MULTI-STAGE FILTRATION: Delivers mechanical, chemical and biological aquarium filtration to maintain a clean aquatic environment.
  • COMPATIBILITY: Use with Marineland Rite-Size Filter Cartridges (see individual filter for sizing recommendations).
  • FIVE SIZES: Available in 75 GPH, 100 GPH, 150 GPH, 200 GPH and 350 GPH sizes.

Aqua-Tech ML90740-00 Power Aquarium Filter, 30 to 60-Gallon Aquariums

Aqua-Tech ML90740-00 Power Aquarium Filter, 30 to 60-Gallon Aquariums
BESTSELLER NO. 7 in 2021
  • For 30 to 60 gallon aquariums
  • Two year warranty
  • Advanced 3 step filtration
  • Comes with one AQUA-Tech EZ-Change #3 Filter Cartridge
  • Traps dirt, removes impurities and offers maximum water to carbon contact

Marineland Magniflow Canister Filter 220 GPH For aquariums, Easy Maintenance

Marineland Magniflow Canister Filter 220 GPH For aquariums, Easy Maintenance
BESTSELLER NO. 8 in 2021
  • 3-STAGE FILTRATION: Water flows through media layers to filter water and ensure a clean aquatic environment.
  • FAST SETUP: Water-tight canister lid lifts up for easy removal.
  • THREE SIZES AVAILABLE: Comes in 220 GPH, 360 GPH and 360 GPH sizes.
  • MARINELAND FILTRATION PRODUCTS: Count on Marineland brand for the most reliable, technically advanced aquariums and accessories on the market.

Penn Plax Cascade CCF3UL Canister Filter For Large Aquariums and Fish Tanks – Up To 100 Gallons, Filters 265 GPH

Penn Plax Cascade CCF3UL Canister Filter For Large Aquariums and Fish Tanks – Up To 100 Gallons, Filters 265 GPH
BESTSELLER NO. 9 in 2021
  • CASCADE CANISTER FILTER FOR FRESHWATER OR MARINE ENVIRONMENTS: the Cascade 1000 (CCF3UL) has 3 media baskets, works at 265 GPH, and is recommended for Aquariums up to 100 gallons. It measures 11.5 x 17 x 10 inches.
  • STATE OF THE ART FEATURES OF THE CASCADE 1000: ♦ flow valves that rotate 360 degrees for easy maneuvering in even the tightest aquarium cabinets ♦ large capacity media baskets allow aquarists to customize to their media needs ♦ push button primer allows for a quick and easy prime of the filter ♦ includes a spray bar, tubing, directional spout for customization, and filter medium.
  • USE ANY COMBINATION OF MEDIA: floss pad for removing particulate matter and a course sponge that provides abundant surface for promoting bacterial growth (to remove ammonia and nitrites) included free with purchase
  • SEE BELOW FOR DIAGRAM, THE CASCADE 1000 INCLUDES: ♦ Flow rate control cut-off valves ♦ two independent directional 360 degree rotating valve taps ♦ swimming pool – style hose clamps ♦ quick, easy, push button self-primer ♦ extra-large capacity stackable filter medium containers with lift-up handles ♦ floss pad and coarse sponge included, free with each canister filter ♦ easy lift alignment clamps that release vacuum suction ♦ sturdy tip-proof base
  • FILTER MEDIA OPTIONS BY CASCADE AVAILABLE ON AMAZON, SOLD SEPARATELY: see below for details, sold separately is media such as: bio-floss, bio-sponge, bio-rings, filt-a-pack pro-z, and filt-a-pack pro-carb-z.

PENN PLAX (CPF3) Cascade Hang-on Aquarium Filter With Quad Filtration System Cleans Up to 35 Gallon Tank

PENN PLAX (CPF3) Cascade Hang-on Aquarium Filter With Quad Filtration System Cleans Up to 35 Gallon Tank
BESTSELLER NO. 10 in 2021
  • Hang on aquarium filter quietly delivers 150 gallons per hour of crystal clear water for your fresh or marine aquariums from 20 to 35 gallons in size.
  • Revolutionary Bio-Falls Quad-Filtration system provides efficient filtration with anaerobic bacteria for additional ammonia and nitrite removal providing maximum oxygenation.
  • Activated carbon cartridge removes harmful chemicals, toxins, odors, discoloration, and other contaminants for your aquarium.
  • Internal sponge optimizes colonization of beneficial anaerobic bacteria and polyfiber floss cartridge traps floating particulate matter.
  • Adjustable flow knob allows you to reduce filtration during feeding times or as needed. Aquarium filter is recommended for both freshwater and saltwater applications.
  • Age Range Description: All Life Stages

Review: Aquatech 5-15 Gallon Fish Tank Filter

Aquatech makes decent filters but the 5-15 gallon filter isn't strong enough for a 10 gallon tank.

Last week, we replaced that filter.

I won't say Aquatech doesn't make good products because that would be misleading. In fact, we ended up replacing our 5-15 gallon filter with another filter from Aquatech. The only difference is the new filter is much bigger.

The issue I had with the original filtration system is this; it just did not work properly in the size tank it was supposedly designed for.

When we first started using the 5-15 gallon filter, it did an OK job keeping the fish tank clean. At the time, we had 4 medium sized common goldfish. I know that type of goldfish does make a mess of the tank quickly. But, compared to more exotic fish, they also can survive in less than perfect conditions. A couple weeks after purchasing the 5-15 gallon filter two of those fish were dead. So, right off the bat, we knew it wasn't going to keep the tank clean enough for more than one or two fish at a time.

While the other two fish have managed to survive in the aquarium with the 5-15 gallon Aquatech filtration system, it hasn't been without a lot of work on our part and that's why we ended up finally giving in and buying the larger filter.

The 5-15 gallon filter did keep the tank clean, but it only managed to do so for about a week at a time. After that, the water would get a bit hazy and our fish would start acting weird because the ammonia levels were too high for them.

A major part of the problem was the 5-15 gallon filter clogs very easily. The intake on it is this narrow tube that gets gunked up in a matter of a couple days; something that is noticeable when you start seeing a small trickle of water coming out of the top rather than a steady flow. The larger filter is the same way but seems to have more suction so the waste it's filtering out doesn't get stuck in the tube. The 5-15 gallon filter had to be taken apart and cleaned out about once a week; something that isn't always the easiest thing to do when everyone works. Again, I understand goldfish can be slightly messy fish. But, I have a hard time believing two of them are going to clog a filter that fast.

Again, I'm not saying Aquatech makes bad products. But, I do think the 5-15 gallon claim is stretching things a bit. If your aquarium is anything over 5 gallons, you will want the larger filter for it.

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