Magnum® Polishing Internal Canister Filter

Product No. ML90770
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The Marineland® Magnum® Polishing Internal Canister Filter uses two refillable chambers to house carbon or customizable filter media. The Magnum Polishing Internal 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.

How many watts does it operate at? 

Asked by: Molaver
45 BREX
Answered by: BREX
Date published: 2017-09-28

Where can I purchase a replacement diverter?

Asked by: RickBorja
http://www.marineland.com/Products/aquarium-parts/Filtration-Products-and-Skimmers/HOT-Magnum-Parts/Intake-and-Outlet-Tube-Set-with-Diffuser-for-HOT-Magnum-PC250.aspx We do not sell the diverter by itself. BREX
Answered by: BREX
Date published: 2017-09-25

How I can buy the spare part is " foam Gasket " for marineland magnum polishing internalcanister filter, I want buy two,thank you.

Asked by: fday
Unfortunately, we do not sell to outside the United States. BREX
Answered by: BREX
Date published: 2017-09-19

You are very nice, but you did not answer my question, please tell me I need the part which is " foam Gasket " use for Marineand magnum polishing filter,I need to buy two help me please,thank you.

Asked by: fday
We do not sell to Australia, unfortunately. BREX
Answered by: BREX
Date published: 2017-09-19

How tall is this thing incl motor?

Asked by: apistodave
10 inches. BREX
Answered by: BREX
Date published: 2017-09-19

We bought this filter and the first few days it was quiet and cleaned the water. Now it makes an aweful humming/crackling sound. My boyfriend has cleaned it and looked over the directions and it still makes this sound. 

Asked by: Dwyatt
Make sure he removed the impeller and cleaned it and inside the motor where it resides. Q tips work best for the motor. Also, if you have sand as a substrate, you may have some caught under the magnet or the impeller. If you cannot resolve the noise, please call 1-800-322-1266. BREX
Answered by: BREX
Date published: 2017-09-15

We have this polisher (ML90770) and we love it. Unfortunately, the foam gasket went into the sink drain and inadvertently got chopped by the garbage disposal. Where can I get a couple replacements? Thank you!!

Asked by: Darci
You need PR1514, http://www.marineland.com/Products/aquarium-parts/Filtration-Products-and-Skimmers/HOT-Magnum-Parts/Exhaust-Gasket-for-HOT-Magnum-PC250.aspx. BREX
Answered by: BREX
Date published: 2017-09-12

I purchased this filter on 7 March 3017 and the motor recently stopped running. What are my options in this regard?

Asked by: Yuliisa
We would first recommend you open the powerhead, take out the impeller, and clean it and the inside of the powerhead with vinegar. If this does not get it operating again, call us at 1-800-322-1266. BREX
Answered by: BREX
Date published: 2017-08-29

Does it Airate?

Asked by: Elliottelliott
Yes, by moving the water it aerates, but you also have a plug you can leave out, and leave the top inch or so up out of the water to provide additional air. Or you can add the Maxi Jet 1200 Accessory kit with the venturi and adapter. BREX
Answered by: BREX
Date published: 2017-09-25

I recently purchased this filter and absolutely adore it. Problem is, while rinsing it at the end of the month, I somehow dislodged the little plug and it slid straight down the drain. Is there a way I can purchase a replacement plug?

Asked by: px4471981
Are you referring to the plug that goes on the diffuser? I believe you need item ML90770-602, but we do not sell it separately at this time. Please call or email us and we'd be happy to send one to you. 1-800-322-1266 or techsupport.marineland@spectrumbrands.com. BREX
Answered by: BREX
Date published: 2017-08-29

would like to know if you carry hoods to a 30" tank

Asked by: phillis
Yes, in both the LED style and the old recessed fluorescent style as well. BREX
Answered by: BREX
Date published: 2017-08-22

I just bought this filter and installed. Its making a crackling noise and the outlet does not produce any bubbles. I just see ripples on the top layer of water. Is this normal? Should it not pump water out with bubbles?

Asked by: Kishore Prasad
It will not produce bubbles unless you add a venturi to it, which is an optional item, and sold separately. Pull the impeller out of the powerhead and re-seat it to stop the crackling noise, if it doesn't stop on its own in a few hours. BREX
Answered by: BREX
Date published: 2017-08-16

I can not get clear water. I am also confused as to where the foam gasket goes. The strainer as well. Is there a video available to assemble this filter?

Asked by: kwhitley
Hi kwhitely! We sure do have a video available! Check it out here: https://youtu.be/4ToxWSkx3uc
Answered by: Customer Service
Date published: 2017-08-08

Is this suitable for a 10 gallon freshwater tank.?

Asked by: Straya9817
This would be too large, and would probably blow the fish right out of a ten gallon tank, unfortunately. :-) BREX
Answered by: BREX
Date published: 2017-08-01

I am planning to buy the internal canister filter and bring it to India. For the power supply, what voltage range does it support, 110V only? or do I need to use a step down voltage transformer in India, as India supports only 220V to 240V?

Asked by: Kishore Prasad
110V only. BREX
Answered by: BREX
Date published: 2017-07-31

Can this be mounted horizontal? Was going to use in my 30 gallon cray/shrimp tank. Thanks

Asked by: DiscusnRI
No, must be vertical. BREX
Answered by: BREX
Date published: 2017-09-05

Could I use this on its side?

Asked by: Jmattin52
No, it must be upright to work correctly. BREX
Answered by: BREX
Date published: 2017-08-18

The part that holds carbon completely broke when I was rinsing it and my O ring snapped in half as well. I was wondering if there are any replacement parts?

Asked by: Zoepug38
Yes, it takes the same media container and the same o ring as the HOT Magnum did. http://www.marineland.com/search.aspx?q=hot%20magnum#/?filter.brand=Marineland BREX
Answered by: BREX
Date published: 2017-07-18

How often should I change the carbon charcoal?

Asked by: Anonymous
Once a month at least. BREX
Answered by: BREX
Date published: 2017-07-18

Can I use it as a protein skimmer or any solutions for a planted tank with protein issues

Asked by: Chris0717
No it will not skim. Skimmers do not skim freshwater, they work in saltwater applications. For a protein issue, vacuum the gravel and do partial water changes. You might want to decrease feeding or increase filtration as well. BREX
Answered by: BREX
Date published: 2017-07-07

Hello!  I just started using the marineland-magnum polishing Internal canister filter yesterday. I Was wondering about removing the plug and putting anairline?  I did for the bubble effect,  the bubbles have stopped but the filter is still working well? 

Asked by: Kat50
This filter should be able to produce bubbles unless the venturi or the filter become clogged. BREX
Answered by: BREX
Date published: 2017-06-28

Hello, I currently have a FW setup with a Penguin 350 and this canister. I am planning on switching the tank to brackish water and wanted to know if the Polishing internal canister is compatible in brackish water. 

Asked by: chrisleon86
Yes, it certainly is! BREX
Answered by: BREX
Date published: 2017-08-08

I have had this filter for about 2 months now and the impeller has completely come apart! I love the filter but it is unusable currently. I have been unable to locate a replacement at this time. please advise. I'm not sure why it would of done this and if

Asked by: Rob jackson
Hi Rob, Most unusual, as we have not had anyone else with an impeller that came apart! You definitely have warranty on this item. We will reach out to you to assist you. BREX
Answered by: BREX
Date published: 2017-06-20

What is the plug for on the outp nozzle? 

Asked by: RobertR
The powerhead that comes with this unit is also sold separately as the Maxi Jet 1200 Pro powerhead. As a powerhead, you can attach a venturi to it. The plug closes that hole up, since a venturi is not necessary with this filter. BREX
Answered by: BREX
Date published: 2017-06-13

I have the internal polishing filter using diatom with it. What is the best procedure to clean the filter element and do you need to "recharge" it with more diatom after cleaning it?

Asked by: Fudsey
Basically, rinse it gently with cool water. And yes, you will need to add diatom powder each time. BREX
Answered by: BREX
Date published: 2017-06-13

Does this have a polishing cartilage like the H.O.B. model looks like fluted paper?

Asked by: cwafty
Yes, it includes the micron cartridge just like the H.O.B. canister, H.O.T. Magnum 250. BREX
Answered by: BREX
Date published: 2017-05-24

I am using the magnum polishing filter as a water polisher in a125 gallon fresh water tank. I have 2 eheim 2217 filters and a uv sterilizer. Filter works great but every 2 days it starts to rattle and the cartridge is dark brown. Is this normal?

Asked by: Azetbur65
Sounds like there is a lot that it is having to pull out of the tank which is why the cartridge is so brown. The rattling probably begins occurring due to the cartridge clogging, reducing the flow rate. Remove the impeller periodically and clean it as well. BREX
Answered by: BREX
Date published: 2017-05-10

Hello, Does the Filter need to be charged?

Asked by: Jimmybee
Hi Jimmybee, No, simply insert it and install the filter into the tank. BREX
Answered by: BREX
Date published: 2017-05-08

Is it normal that my filter turns off and then on? Is yes can i setup the timing for it to turn off

Asked by: EthanLee
Hi EthanLee, No, it would not be normal to turn off, then on. It should just run. Make sure there isn't an air stone near the filter that could be sending air bubbles up into the filter. Also, Take the filter out of the tank, take it apart, and remove the impeller from the powerhead for cleaning. It could have some debris interfering with it. BREX
Answered by: BREX
Date published: 2017-05-04

Whish to now if you send to Malta pls.. For the magnum pro

Asked by: Killiman
Sorry, but no, we sure don't! BREX
Answered by: BREX
Date published: 2017-04-19
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ML90770 - 97gal/290 GPH