Marineland Magnum Polishing Internal Filter, 97-gal

I bought this after reading that you could use it as a water polisher with Diatomaceous Earth. I have not used the Diatomaceous Earth in it yet, but even with just the micron filter, it's been incredible at getting the water clear. I have a Vortex Diatom Filter that has been discontinued so I wanted to have an alternative to clearing the water up when doing water changes etc. Easier to set up & use than the large DE filter. The instructions say you can soak the micron filter in water & a bleach mixture. While this works to get the filter clean, I did have to throw away the filter after, because the rubber on the ends of the filter start to melt. I don't know why they tell you that you can I bought this after reading that you could use it as a water polisher with Diatomaceous Earth. I have not used the Diatomaceous Earth in it yet, but even with just the micron filter, it's been incredible at getting the water clear. I have a Vortex Diatom Filter that has been discontinued so I wanted to have an alternative to clearing the water up when doing water changes etc. Easier to set up & use than the large DE filter. The instructions say you can soak the micron filter in water & a bleach mixture. While this works to get the filter clean, I did have to throw away the filter after, because the rubber on the ends of the filter start to melt. I don't know why they tell you that you can do this, when it clearly eats away at the filter and if someone puts that back into the filter to use it it's hard to tell what it would do to your aquarium water and the fish. I rinse mine in a strong stream of water and let it dry on a rack I have for my aquarium equipment. It comes with the equipment to use it as an everyday filter as well. A place to put your filter media etc. There's unfortunately no way to control the water flow strength on this filter, so for my tank at least, it's a bit rough for the fish to swim against that strong of a current. So I use it mainly for clearing up the water. Easy to take a part and use. Easy to hang in the tank. Suction cups are very strong. I will update when I've tried the diatomaceous earth in the filter. I have been using it pretty constantly for several weeks in one tank without any noise issues and having no issues with it not working. It's been perfect so far. Overall it's been an amazing polishing filter to use in between breaking out the large polisher. I gave it four stars because I feel it's wreckless of them to say you can soak the filter in a bleach water solution when it eats away at the rubber ends. Aquariums are delicate. The water parameters are easy to sway in the wrong direction which can easily kill your fish. If someone doesn't know better or doesn't notice the rubber, I don't know what it would do to the water parameters and/or the fish. I've attached pictures of what happens to the rubber on the filter. … more

I bought one of these filters for my 55 gallon tank 3 years ago and absolutely loved it! After about 3 years, I started having trouble with the impeller, and was going to replace the part. I went on Chewy.com and the price for the entire filter was so cheap, I decided to buy the whole filter! It works great in a tank this size and I am absolutely sold on this product, and I've tried MANY.

I brought this thinking it work better than my other filter With less noises but the hose of the filter got clogged by the black ring that came with the Filter than after that it just keep clogging and the filter was still loud !

As a new fish hobbyist ('oh and by the way an ASE certified technicians, currently studying mechanical engineering) I bought a start up tank and this was the 1st filter internal canister I bought after reading reviews on different sites that were a lil mixed but overall good. Some of my friends in the fish hobby world was impressed with the water pressure from the filter the first day I got it, not so impressed with the fact it was an internal canister filter that took up some room. However 2 weeks later, the pressure reduced and I heard a clicking sound coming from the impeller, before my 30 day product return policy receipt expired I returned it. I exchanged it for another one, which ran As a new fish hobbyist ('oh and by the way an ASE certified technicians, currently studying mechanical engineering) I bought a start up tank and this was the 1st filter internal canister I bought after reading reviews on different sites that were a lil mixed but overall good. Some of my friends in the fish hobby world was impressed with the water pressure from the filter the first day I got it, not so impressed with the fact it was an internal canister filter that took up some room. However 2 weeks later, the pressure reduced and I heard a clicking sound coming from the impeller, before my 30 day product return policy receipt expired I returned it. I exchanged it for another one, which ran for about 1 1/2 months with regular filter changes until without any reason whatsoever water pressure drops to about half..**(just like the 1st one), and of course you should expect water pressure to drop due to debris clogging the filter. But the design of this filter is pretty simple, inside the canister water sits exterior to the filter, gets inducted to the internal portion of the filter, gets extracted upwards through the carbon, then enters the internal impeller chamber that you can actually see, and it's only has a finger guard assembly pretty much to keep fingers or larger objects fron entering. Now here's the crazy part, I spent 1hr carefully washing my filter, replaced carbon, and allowed free flowing water to enter the impeller assembly to clear any blockages so I can increase my water pressure again. I set everything back up and still low water pressure, so no big deal bought a Fluval 70 as a primary anyway. But a couple days later, the impeller is clicking again. Thinking I must have no luck at all, I go to return it and im out of my return policy date. So I bought another one, because i really liked the effectiveness of this filter, this time I decided to follow the instructions down to a tee, because maybe it's me.. well about almost 2 months in, it's already passed the impeller clicking noise point, now it's pumping water for 30 seconds then turns off for about 20 seconds and buzzes, then restarts the same cycle over and over for ther past 2 days. Just ordered another Fluval 70, very effective hang on the back filter. But as far as this filter by marine world, it's a very good filter when it's running, but for some weird reason Marine world didn't use durable parts. A great backup filter at best, but don't buy it for the long term, it won't survive no matter how well you take care of it. I believe most reviews on here are based on short term use, for the few that owned this for years, then consider themselves lucky, but there's no way I bought 3 bad filters !! And I tried uploading pics, but I'm getting an error msg … more

I bought 2 in June, in separate orders. I really liked the first one so much that I bought another. Well, recently the first one had started to sputter and stopped working. I took it apart and cleaned it, and it still sputtered and wouldn't shoot water out, even without the canister attached. Then, when it started, it made a loud humming noise. Thinking it is something with the propeller. Well, the second one is still working, so far. It does clean the water, and I do clean the media as often as needed, so maybe the first one is defective somehow? This product is awesome if it works.

True to its claim Magnum, the filter works above and beyond expectations. The JH filter pad isn't the most robust -not thick- for such a powerful unit, gets soiled fairly quickly. Overall an awesome unit. Yet, not as awesome as Chewy in regards to their customer service.

They worked amazingly for the first month, but now the fans are grinding on the top of the pumps

So, hopefully I have a unique experience. I am a stickler for a clean tank. While my tank is pretty clear I do have a lot of load in my tank. So I decided to order this and add it to my tank. Here is where things get crazy. The first one was defective. It made horrible sounds right out the gate. I called Chewy so I could exchange it. They were absolutely great and sent out a new one right away. I threw the defective item away. My new one comes in and I am so excited. I go to put it together and the ring that stabilizes the media canister is not in the box! So disappointing. But, I call Chewy and see if they can just send the missing piece? They have to send me a completely new filter. They were So, hopefully I have a unique experience. I am a stickler for a clean tank. While my tank is pretty clear I do have a lot of load in my tank. So I decided to order this and add it to my tank. Here is where things get crazy. The first one was defective. It made horrible sounds right out the gate. I called Chewy so I could exchange it. They were absolutely great and sent out a new one right away. I threw the defective item away. My new one comes in and I am so excited. I go to put it together and the ring that stabilizes the media canister is not in the box! So disappointing. But, I call Chewy and see if they can just send the missing piece? They have to send me a completely new filter. They were gray and I received it in three days. I installed it yesterday after it came. I woke up this morning and it doesn’t even look like there is water in my tank. As though my fish are swimming in air. That’s how crystal clear my tank is! Definitely worth the wait. The only complaint I would have about the working product is the bright neon orange ring at the top. It really stands out in my very natural looking tank. With all that being said I cannot thank Chewy enough for taking care of this situation. We have many animals and I use to buy a lot of supplies from amazon. Not any more! Your great prices and customer service have one us over for life. So glad there is a hassle free company that stands by there products! Thanks again Chewy!!! … more

Using this filter to help existing Eheim canister filter due to the large fish I have in my 58 gallon tank. I needed additional air and filtration and the Magnum polishing filter worked perfect to solve my needs.

I bought 2. One for my 100 gallon Red Ear Slider turtle tank and one for my 40 gallon Hex tank. The polishing filter turned both tanks crystal clear. Easy to remove filter and rinse out and put back in tank. I can make my tanks look amazing without changing my external canister filters as often. I've had my turtle for 30 years and this product will make my life easier keeping the tank crystal clear!