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MarineLand Magnum Polishing Internal Canister Filter, For aquariums Up To 97 Gallons, 10.5 IN (ML90770)

4.1 4.1 out of 5 stars 3,296 ratings
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10.5 IN
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Purchase options and add-ons

Brand MarineLand
Special Feature Change Filter Indicator
Product Dimensions 8.5"L x 5.81"W x 11"H
Package Information Cartridge
Model Name Marineland
Maximum Flow Rate 4.83 Gallons Per Minute
Material
Plastic
Capacity
10.5 Liters
Included Components
Marineland Magnum Polishing Internal Canister Filer (ML90770) See more
Purification Method
Activated Carbon

About this item

  • INTERNAL CANISTER FILTER: Submerged motor for quick and easy startup.
  • VERSATILE FILTRATION: Two refillable chambers house carbon or customizable filter media.
  • MICRON WATER POLISHING: High-efficiency polishing with the micron cartridge (included).
  • FOR aquariumS UP TO 97 GALLONS: Capable of filtering 290 gallons of water per hour.

Customer ratings by feature

Suction power
4.0 4.0
Easy to clean
4.0 4.0
Sheerness
3.8 3.8
Noise level
3.6 3.6
See all reviews

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From the manufacturer


For more than 40 years, Marineland has been committed to fish-keeping success. By applying biological science, advanced engineering and imagination to fish-keeping, Marineland continues to be one of the leaders in innovative aquatic environments and equipment.

Marineland Magnum Polishing Internal Canister Filter

The Marineland Magnum Polishing Internal Canister Filter uses two refillable chambers to house carbon or customizable filter media. The Magnum PI Canister Filter is the most versatile filter Marineland has to offer. Choose from every day, continuous three stage filtration or high efficiency polishing with the included micron cartridge. The submerged motor means quick and easy start up, no priming necessary! The Marineland Magnum Polishing Internal Canister Filter filters 290 gallons per hour and is ideal for aquariums up to 97 gallons.

Three Stage Filtration and Water Polishing

Mechanical Filtration: The Rite-Size floss sleeve traps dirt and debris. For the best results, rinse or replace sleeve monthly.

Chemical Filtration: Black Diamond Premium Activated Carbon removes odors, discoloration and water impurities. It is recommended that carbon is replaced monthly since carbon de-activates with use.

Biological Filtration: The dual-chamber design provides a large surface area of 153 square inches for the growth of Bio Spira, a beneficial bacterium that neutralizes ammonia and nitrites.

Water Polishing: The reusable pleated micron cartridge efficiently removes fine debris, leaving water crystal clear. The cartridge may be Charged with diatomaceous earth to further increase efficiency.

Set Up For Continuous 3 Stage Filtration

1. Place the foam gasket inside the canister and shake the canister body to properly orient the gasket. Set aside.

2. Locate the internal media container: If you wish to use alternate filter media than the included carbon, the media separator inside the container may be moved, to adjust the size of the two internal media chambers. To adjust the media separator position, unscrew both lids from the media container, and unsnap the two halves of the container. Reposition or remove the media separator, and snap the halves of the media container back together.

Convert from 3- Stage Filtration to Water Polishing

1. If present, remove the media canister and Rite-Size JH Floss Sleeve from the canister filter body.

2. Place the foam gasket inside the canister body and gently shake the canister body to properly orient the gasket. Set aside.

Marineland Magnum Polishing Internal Filter Rite-Size JH Floss Sleeve 3-pack Marineland Precision Heater for Aquarium Marineland Advanced LED Strip Light Marineland Black Diamond Premium Activated Carbon
See Details
See Details
Customer Reviews
4.7 out of 5 stars
1,658
4.2 out of 5 stars
4,308
4.1 out of 5 stars
134
4.7 out of 5 stars
11,237
Price $8.38 $18.84 — —
Prevents premature clogging Easy to adjust temperature dial Lunar LED Lamps replicate the moon light cycle For sparkling clean water
For best results, change sleeve monthly Perfect for Freshwater or Marine aquariums Integrated timer allows you to control the daytime and lunar settings automatically Ideal for all aquarium filters

Looking for specific info?

Product details

  • Is Discontinued By Manufacturer ‏ : ‎ No
  • Product Dimensions ‏ : ‎ 8.5 x 5.81 x 11 inches; 2.93 Pounds
  • Item model number ‏ : ‎ ML90770-00
  • Department ‏ : ‎ Unisex-Adult
  • Date First Available ‏ : ‎ February 26, 2016
  • Manufacturer ‏ : ‎ Tetra
  • ASIN ‏ : ‎ B01C8PH0OI
  • Customer Reviews:
    4.1 4.1 out of 5 stars 3,296 ratings

Product information

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MarineLand Magnum Polishing Internal Canister Filter, For aquariums Up To 97 Gallons, 10.5 IN (ML90770)

MarineLand Magnum Polishing Internal Canister Filter, For aquariums Up To 97 Gallons, 10.5 IN (ML90770)

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Product guides and documents

Instructions for Use (IFU) (PDF)

Product Description

Marineland brand is the world’s leading brand of innovative equipment and environments for consumers wishing to create the ultimate aquatic showcase. Committed to fishkeeping success for over 40 years, the brand is the professional’s choice for commercial display systems and scientific research. Whatever you’re passionate about – freshwater or saltwater, big or small, beauty or science – make your aquarium your own.The Marineland Magnum Polishing Internal Canister Filter offers versatile aquarium filtration for your aquarium up to 97 gallons. Choose from everyday powerful, continuous three-stage filtration or the high-efficiency micron water polishing option. This compact and versatile filter is capable of filtering 290 gallons of water per hour. The self-priming, submerged motor means quick and easy startup. Its dual-chamber, refillable media chambers house carbon or customizable filter media. Includes Marineland Black Diamond Premium Activated Carbon and a Marineland Rite-Size JH Floss Sleeve. Replace the filter every two to four weeks (replacement filters sold separately); clean the micron cartridge monthly.Clean, sparkling water is the mark of a healthy, thriving aquarium. The amount of filtration needed to maintain an aquarium depends on a number of variables. These include tank size, individual maintenance habits and fish population. Whatever your individual needs, Marineland brand has the filtration products you need to deliver on-target, advanced filtration.

Important information

Directions

No priming necessary

Customer reviews

4.1 out of 5 stars
4.1 out of 5
3,296 global ratings

Customers say

Customers like the clarity and ease of installation of the water purification unit. They mention that it gets the job done and keeps the tank crystal clear. Some appreciate the simple setup and maintenance. Opinions are mixed on noise, quality, performance, ease of cleaning, value, and flow.

AI-generated from the text of customer reviews

100 customers mention100 positive0 negative

Customers are satisfied with the clarity of the water after using the water purification unit. They mention that it gets the job done and the water is still crystal clear. Some say that it does a good job keeping their tank clear.

"...like a smaller in-tank version of the H.O.T. If you like super clean, clear and sparkling aquarium water this will do it...." Read more

"...I will say tho, it is easy to clean and keeps the water crystal clear. Love this…just wish it lasted longer!" Read more

"...and will do a good job keeping your tank clear...." Read more

"...My tank is always super clear...." Read more

56 customers mention47 positive9 negative

Customers find the installation of the water purification unit to be easy. They mention that it's simple to use, maintain, and clean. They also say that the filter is very easy to install and takes just a few minutes. Overall, customers are satisfied with the ease of installation and use of the product.

"...Unlike my Marineland canister filter, this is a breeze to maintain. Well done Marineland. This product delivers...." Read more

"...fine texture/particle size (similar to powdered sand) and it easy to "incorporate" into the filter while using the "micron cartridge"...." Read more

"...Cleaning it, it’s as simple as a twist, the other canisters, there’s a lot to clean, and of course most importantly it keeps my aquarium water..." Read more

"...I took the risk and made the investment. It was super easy to put together, I have not tried using the activated carbon yet but I plan to...." Read more

317 customers mention217 positive100 negative

Customers are mixed about the performance of the water purification unit. Some mention that it works well and flows very strong, while others say that it stopped working.

"Love this thing! super quiet and no nonsense. I hesitated after reading some negative reviews but I've found that those negatives are unfounded...." Read more

"...I am not saying the filter is useless in this form- not at all. It works well and flows very strong but it was not doing a whole lot for my..." Read more

"...Unfortunately, today, it stopped working. We just bought it in February so it lasted just under 3 months. Such a bummer...." Read more

"...Ran great and then slowly started getting louder and then poof...stopped turning on!-------I am new to aquariums...." Read more

277 customers mention91 positive186 negative

Customers have mixed opinions about the noise produced by the water purification unit. Some mention that it's very quiet, while others say that it does have some noise when it needs to be cleaned. Some customers also say that the filter starts making a loud vibrating noise.

"...It's the vibration that causes the noise.Cleaning the filter assembly from time to time is all part of routine maintenance...." Read more

"Love this thing! super quiet and no nonsense. I hesitated after reading some negative reviews but I've found that those negatives are unfounded...." Read more

"...Within a month or two, the filter started making a grinding noise, and per manufacturer's instructions cleaning out the impeller blade helped for a..." Read more

"...Cons:The filter gets very noisy as it clogs which depending on how often you have to clean it may be annoying...." Read more

245 customers mention139 positive106 negative

Customers have mixed opinions about the quality of the water purification unit. Some mention that it's a great filter, heavy duty internal filter that comes with a polishing filter and sleeve, and does an amazing job. However, others say that it starts to fall apart after a month, is faulty, and doesn't seem to last very long.

"...It creates a strong current for smaller fish. It's output spout can be adjusted in nearly 180 degrees direction...." Read more

"...inch of the motor that the impeller blade that I received was just faulty, but as of writing this review YOU CANNOT GET REPLACEMENTS, as looking at..." Read more

"...Year later update: 4/9/2018This is still a great polisher...." Read more

"UPDATE 12/2022: Died after 8 months!!..." Read more

205 customers mention135 positive70 negative

Customers are mixed about the ease of cleaning this water purification unit. Some mention that it's super easy to clean this filter, it keeps the thing super clean, and it'll bleach the micron filter overnight. Others say that the water still reminds cloudy with the polisher, and needs cleaning before a week.

"...to be like a smaller in-tank version of the H.O.T. If you like super clean, clear and sparkling aquarium water this will do it...." Read more

"...I will say tho, it is easy to clean and keeps the water crystal clear. Love this…just wish it lasted longer!" Read more

"...I rinsed and rinsed the sand and substrate, but the water got completely cloudy. So much so I couldn't see the back of the tank...." Read more

"...that using the cartridge filter I have have had considerable success in cleaning up my tank and my corals look much healthier...." Read more

107 customers mention57 positive50 negative

Customers are mixed about the value of the water purification unit. Some mention it's good for the price, and the replacement filters are not expensive. However, others say that it'll be too much for their tank and create lots of waste.

"...Replacement filters are not expensive and they can be re-cleaned often. I am still using the first two after 6 months of use...." Read more

"...The cons for others is probably that it takes some space in your tank, but it does say it’s meant for tanks 75gal+ so in my 75 gal, it doesn’t look..." Read more

"...This filter was very inexpensive! The tank is crystal clear and it super easy to clean this filter...." Read more

"...IME not even worth 30 bucks. The diatom gimmick of this polisher is worthless because all that it serves is to do is clog the filter and fill your..." Read more

81 customers mention39 positive42 negative

Customers are mixed about the flow of the water purification unit. Some mention that it works well and has a very powerful flow, while others say that it has very low flow and gets really loud. Some customers also mention that the filter clogs and stops working frequently.

"...Great surface movement and deep tank circulation...." Read more

"...It ALSO clogged and stopped working frequently. I was at a loss...." Read more

"...It works well and flows very strong but it was not doing a whole lot for my situation outside moving water and maybe helping incrementally over..." Read more

"...HOWEVER, I only give it 3.5 stars because it's insane how fast it clogs up. I bought it and hooked it all up in the tank...." Read more

A TALE OF TWO FILTERS
5 Stars
A TALE OF TWO FILTERS
Ive got a 55 gallon I use to quarantine fish and plants, as well as to have some kind of "pet" in my home office other than my fry growout tanks.I had a massive explosion of algae. A real bloom. Massive cloud of algae. The worst. I tried water changes and darkness which made a minimal impact.Ive attached pictures. Isnt that what everyone comes for? The pictures.Ive had biological, mechanical, carbon bags, on this tank. an old Fluval 303, and the aforementioned water changes.I used to have a diatom filter back in the day and had thought of getting another one. I came across this by chance due to the fact that you can "charge' this filter with diatoms. I ordered cheap diatom powder from another source which was a better deal than what I could get here, and I ordered the filter on Amazon as it was the best deal, a lot less than what the pet stores carry this filter for.On to the important part.I received the filter and affixed it to the front pane of the tank where I could actually see it. IT was so cloudy and green that I could not even properly see the back panels to affix the filter. I could see almost nothing. The camera actually seems to be seeing more than I could. I put the filter on with the Micron "polishing" insert and shut the lights off for 2 days. The second picture you see with the filter moved to the side pane is the result- A small improvement. I could make out slightly more. I am not saying the filter is useless in this form- not at all. It works well and flows very strong but it was not doing a whole lot for my situation outside moving water and maybe helping incrementally over what I was already using.Then I charged the filter with Diatoms ( put the filter in a bucket of tank water, so it was submerged, and while it was running I scooped in 6 tablespoons of diatom powder / DE. Once the water is clear it is "Charged" with powder.I then put the filter back in the tank and pretended to be a functional member of society for a couple hours.The final picture is the result after less than 3 hours on the tank. Please disregard the dirty smudged glass, I had very little reason to clean the glass in the previous state.The tank is essentially crystal clear.The filter worked exactly as well-... no... BETTER than the old Vortex diatom filter I burned out many years ago.Fantastic! For the money- this is a great tool. And saved me a massive headache of keeping the lights off and continually changing water and so on hoping to turn the green tide.
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Top reviews from the United States

Bunny T.
5.0 out of 5 stars Outstanding Performance Negative Reviews Found to be Unfounded
Reviewed in the United States on April 12, 2018
Size: 10.5 INVerified Purchase
Love this thing! super quiet and no nonsense. I hesitated after reading some negative reviews but I've found that those negatives are unfounded. The suction cups on the mounting bracket are strong enough as to require a small knife slipped under the edge to break it's hold. Slipping down the tank wall isn't an issue if you press the center of the suction cups thereby creating suction. Just practical knowledge and common sense,there. I've used this as both a polishing filter and a regular carbon/floss filter with great cleaning results in a 40 gal. cichlid tank. I'd recommend regular cleaning of the carbon/floss elements before declaring it not suitable as a stand alone filter. This baby pushes water like crazy. Nothing lying on the bottom, nothing hanging out in the plants. I think this unit might be too strong for a smallish community tank, however. It creates a strong current for smaller fish. It's output spout can be adjusted in nearly 180 degrees direction. Great surface movement and deep tank circulation. Years ago I used the Magnum H. O.T. and this unit seems to be like a smaller in-tank version of the H.O.T. If you like super clean, clear and sparkling aquarium water this will do it. The only thing I don't like is the red band at the rim of the canister.(the red conflicts with aesthetic aquarium decor) It appears to be something of a Teflon tape-like seal on the threads-so removing it doesn't seem to be a wise idea.. Read and follow directions, apply common sense and practical experience in aquarium keeping and I doubt you'll be disappointed. Definitely a little powerhouse. I would highly recommend this unit for tanks 20-30 gal. or better. Perhaps as super fast cleaning/polishing support for occasional use in smaller tanks. 55 gal, or more I'm thinking two would be required. I can't see more delicate species, like say, Discus, being comfortable in the water circulation this unit creates. Big tough hombres like cichlids do great in it. Routine cleaning of filter cartridge /floss is important.
23 people found this helpful
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Ursan
5.0 out of 5 stars I don't understand the poor reviews. THIS FILTER ROCKS! (updated)
Reviewed in the United States on February 26, 2017
Size: 10.5 INVerified Purchase
I can only attribute it to a lack of understanding of what "water polishing" does.

It's not meant to be the exclusive filtering in a tank. It's meant to be used as needed only.

Also, I find this a perfectly silent filter unit. Any noise is likely due to debris left in the unit or air being sucked in. It MAY also mean an unlikely defect if this is so, JUST RETURN/EXCHANGE the device. This is Amazon after all.

I'm using mine as an occasional polisher and I'll swap in the floss and cartridge with bio-media.

I like that it can be placed in the back of the tank behind my plants. The outlet is currently aimed at my heater and a media bag.

There's no reason for many of the complaints I'm reading. Please research before you purchase. You'll be much happier and you won't be misrepresenting the product for other people just because you don't understand things.

UPDATE 3/23/2017: I've had this for just about a month now and IT'S MAKING A HORRIBLE NOISE! Buzzing and all.

So, I disconnected it from power and removed it from my tank. I then removed the filter canister and cleaned the power head. It was easy and took all of 2 minutes. I also took the opportunity to clean the filter media (using tank water in the canister) to just wring it out well.

Since the impeller is a high-speed rotating device, any buildup of sludge on the blades will cause it to become unbalanced and that causes vibration. It's the vibration that causes the noise.

Cleaning the filter assembly from time to time is all part of routine maintenance.

I reassembled the components and reinstalled in my tank. It's again, quiet as a whisper. In fact, my Penn-Plax SA-X6 air pump makes more noise than this filter unit.

Unlike my Marineland canister filter, this is a breeze to maintain. Well done Marineland. This product delivers.

Year later update: 4/9/2018
This is still a great polisher. I just did a rebuild on a planted/shrimp/snail tank that I decided to go with sand covering planting substrate. I rinsed and rinsed the sand and substrate, but the water got completely cloudy. So much so I couldn't see the back of the tank. A little  Seachem Clarity 500ml  and some polishing and the tank is crystal less than 2 hours later. I was almost completely stunned. Not that it worked, but that it worked so completely and quickly.

Once it'd done it's task, I just removed it and let the tank's canister filter take over cleaning duties.

If I had ONE issue with this filter, is that it's not safe for smaller shrimp or fish fry. There really needs to be a finer intake screen on this. But other than that, it's a winner.
80 people found this helpful
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Elizabeth Hill
4.0 out of 5 stars Works great but short lived :(
Reviewed in the United States on May 13, 2023
Size: 10.5 INVerified Purchase
My husband and I have gone all in on the cold plunge life, doing it every single day since the first of the year. After A LOT of research, my husband chose this one b/c of its large capacity and of all the recommendations. Unfortunately, today, it stopped working. We just bought it in February so it lasted just under 3 months. Such a bummer. We don’t want to break our streak of a cold plunge every day, so my husband is reaching others right now. I will say tho, it is easy to clean and keeps the water crystal clear. Love this…just wish it lasted longer!
11 people found this helpful
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Top reviews from other countries

Translate all reviews to English
Jon
5.0 out of 5 stars works well, easy to maintain
Reviewed in Canada on April 13, 2024
Size: 10.5 INVerified Purchase
Second time purchasing this, the cord broke off right at the motor on the first due to hardening and the lack of a strain relief boot for the cord (some feedback for Marineland), rendering it useless, but it worked well and lasted a long time and was worth the $100. It is quiet, if it makes rattling noise that means the filter is clogged, it works fast and can clog quick, it is simple to service. It obliterates air and helps oxygenate the water or move your C02. It gets the water crystal clear with the white filter. Clears a tank and moves water very fast. Don't handle it by the cord in the water even if seems buoyant.
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hawks
1.0 out of 5 stars This item does not work
Reviewed in the United Kingdom on July 7, 2023
Size: 10.5 INVerified Purchase
Keep cutting out blowing fuses
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jorge alberto valdes treviño
5.0 out of 5 stars Buen producto
Reviewed in Mexico on March 24, 2020
Size: 10.5 INVerified Purchase
Funciona muy bien lo recomiendo
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Casey
5.0 out of 5 stars Great for the price
Reviewed in Canada on September 13, 2023
Size: 10.5 INVerified Purchase
This filter is great. Before, I had Aqua Clear Filter that destroyed my floor and my wall and it was so noisy it was driving everyone crazy. I feel like this is the best item for the price if you don't want to invest in a refugium.
It starts to make a little noise when it gets dirty. I keep it clean (clean up once a week) and my water is perfect without even hearing the thing so I really don't understand people saying it is noisy... I have a 90g reef tank with 7 fishes so except the fact that having it is not perfect because of the aesthetics, it is still a great item for the price.
3 people found this helpful
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Cliente de Amazon
5.0 out of 5 stars Practico
Reviewed in Mexico on December 5, 2019
Size: 10.5 INVerified Purchase
Excelente
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