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.
Magnum® Polishing Internal Canister Filter is rated 4.0 out of 5 by 11.
Rated 5 out of 5 by from It really works! Over the 20 years I have had a number of different filters and the Magnum Polishing internal canister filter is the absolute best. I was having an algae problem when I bought this system. I had to clean the filter once a week at first because of the algae filling up the canister. ( I now clean the filter once a month as part of water changes). However, the water was crystal clear in my 45 gallon marine tank with in an hour and has remained that way every since. The funny part is that I did not realize my water was not clear. What an amazing difference this system has made in my tank. I would buy this system again and highly recommend it to any one that has an aquarium. I have had no problems and it is very quiet. I have left my larger system in place and will continue to use both at the same time.
Date published: 2017-05-11
Rated 1 out of 5 by from Lots of flow issues I have had this filter for 2 days. I planed to use it to help fight an algae bloom i'm having and used the media container for a phosphate sponge. Ran great for a few hours then the flow rate dropped to near nothing. I took it apart and cleaned it nothing, was clogging the intake or the impeller the filter sleeve it self did not even look particularly soiled. Ran it again for about 20 min and it went back to the same super low flow rate. Next i used the polish filter and it worked for a few hours the same issue. I tried to clean out the filters and they look almost new however it still moves so little water it cannot be that effective. If i run the pump in a bucket alone its fine so clearly the issue is the filters... however after a few hours of work in a 75gal tank this seems to pretty unreasonable. I would avoid this for any larger aquarium types. Summery: I would avoid this. To easy to clog up and takes constant maintenance on a larger tank. Would only recommend using for tanks no later than 40 gal.
Date published: 2017-03-02
Rated 5 out of 5 by from Unbelievable results Having the 38 gallon bow front kit, the marineland bio wheel 200 HOB is sub par for this set up, added this canister finally took the haze out if the water, I now pretty much use the bio wheel as a holder gir mh ceramic rings with just a pre cut piece of media in front, and use the canister as my main filter. Controlling the flow problematic but with some proper position have jt jusg right. So wish they would make a flow control. But other than that it us a awesome filter/polisher tank is now crysral clear water parameters are all perfect now we can populate the tank.
Date published: 2017-01-20
Rated 3 out of 5 by from Stopped pumping Output of water fail Took it thoroughly apart and cleaned and still not pumping really at all
Date published: 2017-01-07
Rated 1 out of 5 by from Blowing bubbles I bought this filter about a month ago and it's blowing bubbles bad. In a reef tank that is not good. I've used 2 hot 250's years ago and loved them. They kept the water crystal clear. Not loving the 290 how do I make it stop blowing bubbles.
Date published: 2016-12-30
Rated 5 out of 5 by from Great Product Santa dropped this off and I could see a difference in my 30 gallon cube in just hours! Easy to use, fits in well with the rest of the tank! I'm glad the man in the red suit dropped it off
Date published: 2016-12-27
Rated 5 out of 5 by from absolutely amazing!!! I just purchased this for a polishing filter because of a algae bloom problem. I was amazed of how quickly this little filter worked. It was so easy to use, the micron filter worked wonders, then I added a little diatomaceous power,and WOW what a difference.After having problems with other brands of filters using diatomaceous earth, I am sold!!! I will tell all my friends about this filterand theycan see for themselves the great results!! Thanks Marineland for a great product!!!
Date published: 2016-11-30
Rated 4 out of 5 by from white puffs We love the filter itself since once the lights go out it mak the take look so clear but all day we have the worst issue with the filter shooting out white puffs and it will not go away we have tried adjusting the filter and it makes no difference
Date published: 2016-11-20
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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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