Editor's Choice - Our Favorite CNZ Aquarium Filters

1. CNZ 7" Holder for Aquarium Reef Tank Sock Filter Bag

User Ratings: 56 10

CNZ CNZSFH7 First Impressions

"And it is so quiet."

What I don't like is how much smaller it is than the Aqueon. I decided to go with this filter since I had a positive experience previously. Overall, I like the 350's slim back design, and be able to add up to 4 cartridges. A canister or in tank filter is ten times more work and messy. Worst case is that the motor could burn out. It sounds like a Big Air pump buzzing. You do have to unplug it for those two jobs.

  • CNZ 7" Holder for Aquarium Reef Tank Sock Filter Bag
  • Easy-to-install filter bag holder for any sump filtration system
  • enhances mechanical filtration
  • Can be use on acrylic or glass tank
  • Fit up to 3/4 inch of the thickness of tank glass
  • Package includes: 1x 7" holder, 2 durable plastic screws
  • Manufacture: CNZ
  • Product Dimensions: 11 x 6 x 2 inches; 11.64 Ounces
  • Editor's Impressions Of The CNZ CNZSFH7
  • Filter Effectiveness [star rating='3.1']
  • Quality [star rating='4.9']
  • Value For Money [star rating='4.7']
  • Affordability [star rating='3.5']

CNZ CNZSFH7 Final Thoughts

"- Plug it into power."

LOW and BEHOLD, LMAO, I missed where you had to put water in the back of the filter. SO, I sat down and read EVERY little thing in rhe instructions. In the afternoon the noises started again. This filter comes with a sponge, activated carbon, and bio material in a mesh bag. Oscars are very messy fish, especially during feeding. It sounds like a Big Air pump buzzing. I'd highly recommend not replacing the bio material& sponge, ever.

Overall Score
4.1

[star rating="4.1"]
(18 Points)

2. Supreme Aquarium EZ Clean Replacement Filter Media Cartridges, 2 Pack, #21155 by Danner Manufacturin...

User Ratings: 85

DANNER MANUFACTURING 21155 First Impressions

"Just buy it!"

You can't really tell though, and the filter is working great. I will never buy any other HOB no matter what deal they might be offering. It doesn't rise up hugely above the tank like a lot of HOB filters. The instructions are a bit to much for me. You can't really tell though, and the filter is working great. Oscars are very messy fish, especially during feeding. You can't really tell though, and the filter is working great.

  • Supreme Aquarium EZ Clean Replacement Filter Media Cartridges, 2 Pack, #21155 by Danner Manufacturing
  • For use with all EZ clean Aquarium filters
  • Plastic cartridge included
  • Mechanical, chemical and biological filter media
  • Manufacture: Danner Manufacturing
  • Product Dimensions: 1 x 1 x 1 inches; 3.2 Ounces
  • Editor's Impressions Of The DANNER MANUFACTURING 21155
  • Filter Effectiveness [star rating='4']
  • Quality [star rating='5']
  • Value For Money [star rating='5']
  • Affordability [star rating='5']

DANNER MANUFACTURING 21155 Final Thoughts

"It was an Awesome filter!"

Also price was very reasonable and shipping was fast. I recently upgraded from a 10 gallon aquarium to a 29 gallon. There must be a huge batch of these units at Amazon right now that are bad. They are simply the best design for nitrifying bacteria to grow on. Never ever ever use it past a year. Just rinse them out once a month, don't throw that beneficial bacteria away. I have always used Marineland filters and been happy with them and their quality.

Overall Score
4.6

[star rating="4.6"]
(8 Points)

3. SunGrow 6-Layer Betta Corner Sponge Filter, Underwater Corner Aquarium Filter, Works for Tropical Fi...

User Ratings: 63 9

SunGrow First Impressions

"Just a tip!"

Now I'm having the same issue with the Aqua Clear 50. Oscars are very messy fish, especially during feeding. I bought a top fin 55 gallon aquarium on sale. The lever on the bottom helps even the filter out. I liked the clean lined look and the pull out basket. I used to have a 37 gallon eclipse aquarium. My fish are definitely happier and my water is crystal clear.

  • SunGrow 6-Layer Betta Corner Sponge Filter, Underwater Corner Aquarium Filter, Works for Tropical Fish & Breeder Aquarium, Slow Current, Perfect for Fry & Small Fish, Must-Have for Aquarists
  • ✔ REPLACE THE TRADITIONAL HOB, CANISTER FILTERS --- Gone are the days when you got to change the cartridges and filter media almost every week. The handy filter by SunGrow will do the same job economically and quickly. This is the easiest filtration method you’ll ever use.
  • ✔ 6-LAYER CORNER SPONGE FILTER --- This sponge is triangular in shape to allow you to insert it neatly and discreetly into the corner of your aquarium. Your aquarium’s physical condition and aesthetics should be equally important. Slow water current protects the fish from getting sucked up through the filter. Therefore, it creates a perfect atmosphere for hatchery, ornamental fish breeding, maternity, and nursery tank.
  • ✔ COTTON SPONGE FOR HAPPIER PETS ---- This sponge features fine filtration that will leave your aquarium water crystal clear, an excellent choice for an aquarium with small fish like dwarf cichlid, guppy, killifish, colorful gods. This sponge filter is also suitable for discus breeding tanks, small tropical fish tanks and fry stock tanks.
  • ✔ EASY TO WASH & REUSE--- You can use the corner sponges for a good few months before needing to use replacement sponges. Use drained out aquarium water to rinse off the sponges. No tap water or hot water should be used
  • ✔ REPLACEMENT SPONGE FILTER--- This corner sponge filter can be used with an existing betta filter or sponge filter in your aquarium. You can replace your old sponges with this brand new pack of 1 sponge filter.
  • Manufacture: Luffy Pets Collection
  • Editor's Impressions Of The SunGrow
  • Filter Effectiveness [star rating='3.6']
  • Quality [star rating='3.5']
  • Value For Money [star rating='3.8']
  • Affordability [star rating='4.7']

SunGrow Final Thoughts

"Like brand new."

The Marineland penguin 350 is a great filter. Overall I would recommend this item. Unlike my old HOB filter, it doesn't sound like a leaky toilet. This is a well designed unit and a lot of bang for the buck. I DONT KNOW WHY MANY THINK THIS IS A NOISY FILTER. I was also having oxygen issues because of this. The current is strong but you can adjust it with the midsection lever.

Overall Score
4.1

[star rating="4.1"]
(25 Points)

4. MarineLand The Best Penguin Power Aquarium Filter, 10 to 20-Gallon, 100 GPH, Fish Tank

User Ratings: 46 16

MarineLand First Impressions

"I bought this filter."

The bacteria eats the nitrates in the water to help keep it clean. Unlike my old HOB filter, it doesn't sound like a leaky toilet. I've think I've had had six of them. It's only rated at 25 gph less, but holds considerably less media. This new AQ50 filter has loose bio-media, i. BUT after some YouTube research I was able to fix the noise issue. I was worried about some of the negative reviews.

  • MarineLand The Best Penguin Power Aquarium Filter, 10 to 20-Gallon, 100 GPH, Fish Tank
  • Certified flow rate of 100GPH, perfect for all aquariums up to 20-gallon, uses the Rite-Size A" filter cartridge"
  • Delivers easy, three stage mechanical, chemical, and biological aquarium filtration
  • Convenient Penguin Rite Size Cartridges come ready to use with each filter
  • Manufacture: MarineLand
  • Editor's Impressions Of The MarineLand
  • Filter Effectiveness [star rating='4.4']
  • Quality [star rating='3.5']
  • Value For Money [star rating='3.9']
  • Affordability [star rating='4.9']

MarineLand Final Thoughts

"This one does!"

Controlling the flow rate doesn't require modifying the filter. Doing research I learned that if I add more filter media, the noise will subside. Once it loses its charge, you'll need to replace it. I can take apart a car engine and put it back together. They were great to deal with and the new filter is working great! I've looked at so many filters and reviews. It's easy to clean and we all know about easy.

Overall Score
3.9

[star rating="3.9"]
(17 Points)

5. Penn-Plax Cascade Canister Filter Replacement Strainer (for Models 700-1500) Cascade Canister Filter...

User Ratings: 91

Penn-Plax First Impressions

"Came on time."

Overall I would recommend this item. Worst case is that the motor could burn out. I will pick 3-4 of these at one time over a single system any day. All in all, I highly recommend this filter and I'm a extremely happy customer! However, lately I've purchased the Aqua Clear 70 and 50. It's only rated at 25 gph less, but holds considerably less media. I recently upgraded from a 10 gallon aquarium to a 29 gallon.

  • Penn-Plax Cascade Canister Filter Replacement Strainer (for Models 700-1500) Cascade Canister Filter Replacement Directional Spout
  • Penn-Plax Cascade Canister Filter Replacement Directional Spout.
  • Penn-Plax part # CCF209.
  • Penn-Plax Cascade Canister Filter Replacement Strainer.
  • Penn-Plax part # CCF208.
  • Manufacture: Penn-Plax
  • Editor's Impressions Of The Penn-Plax
  • Filter Effectiveness [star rating='4.5']
  • Quality [star rating='4.2']
  • Value For Money [star rating='5']
  • Affordability [star rating='5']

Penn-Plax Final Thoughts

"Not my case!"

I also like the fact that it is relatively low profile and discreet looking. They are simply the best design for nitrifying bacteria to grow on. I can hear it 3 rooms away grinding away. The first night I had the pump going it started making a screeching sound. I have the topfin 29 gallon tank and used the HOB filter it came with. My tank was a mess when I got this pump. It wasn't producing much surface agitation.

Overall Score
4.7

[star rating="4.7"]
(18 Points)

6. AquaTop 211 GPH AF200 Auto-Priming Canister Filter with UV

User Ratings: 50 22

AquaTop AF-200 First Impressions

"Seriously."

Basically, make sure everything that is suppose to spin, does so smoothly. Overall, I'm very happy with this filter. I can take apart a car engine and put it back together. This is not my first experience with a marineland filter. SO I decided to order this for my 29 gallon tank. There is a sound from the water shooting into the tank! The ability to regulate the flow solves the loud waterfall problem.

  • AquaTop 211 GPH AF200 Auto-Priming Canister Filter with UV
  • Advanced Multi-stage filtration system + UV
  • Suitable for tanks up to 60 Gallons
  • Includes Mechanical, Biological, and Chemical Filtration
  • Manufacture: Aquatop, Inc.
  • Product Dimensions: 13.5 x 8 x 8 inches; 10 Pounds
  • Editor's Impressions Of The AquaTop AF-200
  • Filter Effectiveness [star rating='4.1']
  • Quality [star rating='2.4']
  • Value For Money [star rating='2.9']
  • Affordability [star rating='2.5']

AquaTop AF-200 Final Thoughts

"Expensive."

Lift the sticking wheel outuse a Q-tip to clean the slots where the wheel rests. As for performance, I couldn't ask for a better filter. You'll want to pull that water from the bottom. I plan to cycle this new AC 50 on a separate tank and then xfer it to the 20 gallon. Lift the sticking wheel outuse a Q-tip to clean the slots where the wheel rests. My baby turtle even loves it so much he won't let go. I'm currently in the process of receiving another replacement on that model.

Overall Score
3.4

[star rating="3.4"]
(9 Points)

7. Aquarium Turtle Filter Waterfall Flow Water Clean Pump Bio-Filtration for Reptiles Tank Low Level Wa...

User Ratings: 55 13

JackSuper First Impressions

"MINE IS VERY QUIET."

I want to answer some of the complaints I've read. In the afternoon the noises started again. I bought a top fin 55 gallon aquarium on sale. I've think I've had had six of them. You do have to unplug it for those two jobs. The Marineland penguin 350 is a great filter. I have contacted customer service to see if I can get a replacement unit.

  • Aquarium Turtle Filter Waterfall Flow Water Clean Pump Bio-Filtration for Reptiles Tank Low Level Waterfall Filter for Small Fish Tank Turtle Tank Shrimp Tank Amphibian Frog Crab
  • We have the 90 days replacement and the refund service. All the emails will be replied within 24 hours. We have lifetime technique support, please feel free to contact us for any quality problem. We will do our best to help you.
  • Perfect Aquarium filter for aquatic turtle tanks, Reptiles, Amphibians, Frog, Cichlids, Newt or Fish tank in any aquarium up to 40 gallons
  • Easy to install,Water filter pump can be hung on the aquarium or fixed with sucker. Low water level capability(Lowest water level 1.6inch/4cm)
  • Water circulation and cleaning:this turtle filter helps water cycling,the Activated carbon cartridges and bio ball help clean water,absorbs odors and discoloration,provide a healthy water for your aquarium
  • High performance, the motor set under the water,more quiet than external filter,you can creat a waterfall with rock inside the fish tank
  • Filter waste and stop the waste go into power head
  • Protect your filter power head and prevent small fish or animal suck in the filter.
  • absorbs odors and discoloration
  • Manufacture: JackSupermall
  • Product Dimensions: 8.27 x 3.66 x 2.76 inches; 14.39 Ounces
  • Editor's Impressions Of The JackSuper
  • Filter Effectiveness [star rating='3.9']
  • Quality [star rating='3.5']
  • Value For Money [star rating='3.2']
  • Affordability [star rating='3.1']

JackSuper Final Thoughts

"This is the one."

I had a lot of particles in the water. They are easily found from mom-n-pop pet stores to large chain stores. Get it and take heed to what I wrote. Overall, I like the 350's slim back design, and be able to add up to 4 cartridges. Firstly, I'd recommend taking the motor apart and putting it back together. I AM IMPRESSED THAT IT WORKS AS IT ACTUALLY SHOULD! It's easy to clean and we all know about easy.

Overall Score
3.9

[star rating="3.9"]
(763 Points)

8. GMsound Bio Sponge Filter 20 or 40 Gal Breeding Fry Betta Shrimp Fish Tank Aquarium

User Ratings: 61 2

GMsound First Impressions

"SO THEREFORE."

The only thing you hear is the water and even that is a soothing sound. I have contacted customer service to see if I can get a replacement unit. I had originally got one for my 75 Gallon tank housing an Oscar. It started out silent for about 30 mins and then it got super loud. I contacted Marineland about my issue and they promptly sent me a new one right away! The current is strong but you can adjust it with the midsection lever. I'm a mechanical engineer and understand design.

  • GMsound Bio Sponge Filter 20 or 40 Gal Breeding Fry Betta Shrimp Fish Tank Aquarium
  • 1) The sponge ftters are made of excellent and perfect material; it can be reused for long time.
  • 2) The sponges of flter are designed by multilayer principle, it has large surface, which will not cause blockage and could be wash easily.
  • 3) When using in fiter system, the sponge fiter will not cause any noise pollution.
  • 4) When using air stone which will produce air supply tor the aquarium tank, it will increase oxygen level in the tank.
  • 5) The sponge flter is suitable for all Freshwater fishes, like Discus, Tetras, Guppy, Arowana,Betta and Ete...
  • Manufacture: GMsound
  • Product Dimensions: 8.27 x 4.92 x 4.72 inches; 4.8 Ounces
  • Editor's Impressions Of The GMsound
  • Filter Effectiveness [star rating='4.8']
  • Quality [star rating='4']
  • Value For Money [star rating='3.7']
  • Affordability [star rating='3.4']

GMsound Final Thoughts

"It's heavy and awkward."

In the afternoon the noises started again. I was new to the hobby and didn't realize that Tetras were inferior filters. A canister or in tank filter is ten times more work and messy. However, lately I've purchased the Aqua Clear 70 and 50. This one is working perfectly good FOR RIGHT NOW. MAKE SURE YOU PUT WATER IN THE BACK OF THE FILTER! I was also having oxygen issues because of this.

Overall Score
4.4

[star rating="4.4"]
(70 Points)

9. Aqueon QuietFlow LED PRO Aquarium Power Filter 50

User Ratings: 66 10

Aqueon 100106117 First Impressions

"No worries there."

Just rinse them out once a month, don't throw that beneficial bacteria away. It's easy to clean and we all know about easy. The filter arrived within 2 days and was the exact same as Petsmart's. I can take apart a car engine and put it back together. DO NOT CLEAN OR WASH the paper wheel itself. I checked and cleaned it and still just as loud. I also like the fact that it is relatively low profile and discreet looking.

  • Aqueon QuietFlow LED PRO Aquarium Power Filter 50
  • Provides mechanical, chemical, biological filtration plus additional assistance with the Aqueon specialty filter pads
  • Self-priming – starts up automatically after cleaning or power interruptions.
  • Certified flow rates that assure proper water circulation for improved fish health
  • LED indicator light flashes when it’s time to replace clogged cartridges by monitoring actual water levels.
  • Internal pump design helps dampen noise and eliminate leaks
  • Lifetime warranty; Ideal for aquariums up to 50 gallons
  • Uses large Aqueon replacement cartridges
  • Manufacture: Central Garden & Pet
  • Product Dimensions: 8.4 x 7.9 x 4.1 inches; 2 Pounds
  • Editor's Impressions Of The Aqueon 100106117
  • Filter Effectiveness [star rating='4.8']
  • Quality [star rating='4.7']
  • Value For Money [star rating='4.2']
  • Affordability [star rating='3.7']

Aqueon 100106117 Final Thoughts

"It's priced awesome!"

This is not my first experience with a marineland filter. Doing research I learned that if I add more filter media, the noise will subside. I put it together, reading instructions of course. The filter stopped working all of a sudden. This one is working perfectly good FOR RIGHT NOW. This is not my first experience with a marineland filter. Basically, make sure everything that is suppose to spin, does so smoothly.

Overall Score
4.2

[star rating="4.2"]
(690 Points)

10. LiquaGen - 6 Stage Heavy Duty - 0 PPM Reverse Osmosis/Deionization Aquarium Reef Water Filter System...

LiquaGen 617629986655 First Impressions

"Since then no problems."

I decided to go with this filter since I had a positive experience previously. Never ever ever use it past a year. They were great to deal with and the new filter is working great! I was new to the hobby and didn't realize that Tetras were inferior filters. My tank is nice and clear and my fish are much happier. I decided to go with this filter since I had a positive experience previously. Basically, make sure everything that is suppose to spin, does so smoothly.

  • LiquaGen - 6 Stage Heavy Duty - 0 PPM Reverse Osmosis/Deionization Aquarium Reef Water Filter System, 150 GPD
  • This product is great for aquariums, laboratory testing, and other applications where ultra-pure water is necessary. 1 year Satisfaction Guarantee, w/ life time support by water technology experts based in California. We pressure test EVERY system before it is shipped ensuring the highest standard of quality.
  • Long lasting filters (standard 10 inch filters) w/ high quality connect fittings | Super easy & convenient installation.
  • Pre- Assembled system for easy installation. Guaranteed 0 ppm water. Installation takes approximately 5 minutes!
  • Manual Flush Valve makes this system superior to any other RO/DI system in the market by increasing the life of the unit, reducing possible leaks, and saves you valuable time when flushing the system every few months.
  • High Rejection Reverse Osmosis (RO) Membrane. Film by GE USA 2 year manufacturer warranty; Lifetime customer support
  • Manufacture: LiquaGen Water Technology
  • Product Dimensions: 17 x 7 x 16 inches; 21 Pounds
  • Editor's Impressions Of The LiquaGen 617629986655
  • Filter Effectiveness [star rating='5']
  • Quality [star rating='4.1']
  • Value For Money [star rating='4.8']
  • Affordability [star rating='5']

LiquaGen 617629986655 Final Thoughts

"The product itself."

I have contacted customer service to see if I can get a replacement unit. I will pick 3-4 of these at one time over a single system any day. In the afternoon the noises started again. This filter has is a very simple and efficient design. All in all, I highly recommend this filter and I'm a extremely happy customer! Therefore, you wouldnt have 2 filters running. Overall, I like the 350's slim back design, and be able to add up to 4 cartridges.

Overall Score
5.0

[star rating="5"]
(4 Points)

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