---
product_id: 26361704
title: "Magnum Polishing Internal Canister Filter, For aquariums Up To 97 Gallons, 10.5 IN (ML90770)"
price: "1162 Lei"
currency: RON
in_stock: true
reviews_count: 8
url: https://www.desertcart.ro/products/26361704-magnum-polishing-internal-canister-filter-for-aquariums-up-to-97
store_origin: RO
region: Romania
---

# Micron polishing cartridge included 290 GPH flow rate Dual refillable media chambers Magnum Polishing Internal Canister Filter, For aquariums Up To 97 Gallons, 10.5 IN (ML90770)

**Price:** 1162 Lei
**Availability:** ✅ In Stock

## Summary

> 💧 Elevate your aquarium game with pro-level clarity and effortless filtration!

## Quick Answers

- **What is this?** Magnum Polishing Internal Canister Filter, For aquariums Up To 97 Gallons, 10.5 IN (ML90770)
- **How much does it cost?** 1162 Lei with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ro](https://www.desertcart.ro/products/26361704-magnum-polishing-internal-canister-filter-for-aquariums-up-to-97)

## Best For

- Customers looking for quality international products

## Why This Product

- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Compact Yet Mighty Design:** Fits discreetly inside your tank, maximizing space without compromising performance.
- • **Powerful 290 GPH Filtration:** Keeps up to 97-gallon tanks crystal clear with rapid water turnover.
- • **Customizable Dual Media Chambers:** Tailor filtration with carbon or your choice of media for ultimate water quality.
- • **Submerged Motor for Silent Startup:** Quick, hassle-free priming with whisper-quiet operation to maintain your peaceful aquatic vibe.
- • **Micron Polishing for Pristine Water:** High-efficiency polishing cartridge removes microscopic debris for sparkling clarity.

## Overview

The MarineLand Magnum Polishing Internal Canister Filter is a versatile, high-performance filtration system designed for aquariums up to 97 gallons. Featuring a powerful 290 gallons-per-hour flow rate, dual refillable media chambers for customizable filtration, and an included micron polishing cartridge, it ensures crystal-clear water and a healthy aquatic environment. Its submerged motor enables quick, silent startup, while the compact design fits neatly inside your tank, making it ideal for both freshwater and saltwater setups.

## 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.

Review: Best-in-Class Diatom Filter Alternative - After 35 years using a Vortex D-1 filter, its pump head started leaking. Imagine that!!! After some searching, I found the Marineland Polishing Canister Filter at a reasonable price here on desertcart that can polish your aquarium's water with diatomaceous earth much easier. First try IT WORKED COMPLETELY. I say easier because, the Vortex had hoses and a large filter canister that were all external. The Marineland filter sits in your tank and does the same job. My tank is 35 gallons connected to Fluval 306 Canister Filter and the Marineland filter is not too big and visible if I put it on a sidewall. First day - it's very quiet - so we'll see what happens in the future as other buyers have reported increased noise as filter ages. Charging it is a breeze. After running for about 3 hours, my cloudy water completely cleared - just as the Vortex did. I'll shut the Marineland down and run it as needed just like I did with my Vortex. The only question now is, do I have to recharge the Marineland Filter after each use to get particle coverage on the internal filter element. We'll see on that. Make sure when you charge your filter with diatom powder, you use the Marineland recipe - 6 tablespoons/charge, not what other YouTube Bloggers say - 6 teaspoons/charge. (By the way, 6 tablespoons is 1/3 of a cup.) Enjoy this product - my Vortex has been relegated to recycle! PS The Middle photo is a before and the far right photo is an after 1 hour of filtering.
Review: Happy with purchase - So far I have been happy with this purchase. I purchased it for my 75 gallon reef tank with a few fish and some soft corals. The tank has live rock and a protein skimmer, and I have tried and abandoned a number of different hang-ons (didn't work), and cartridge filters (too risky). Living in an apartment where any water spill will run down below me, I just could risk using anything outside of the tank, which is one of the reason that I got rid of my sump when downsized my tank size. However I clearly needed some type of mechanical filter. So without much hope, I decide to try this one, without having to make another big investment. I have been pleasantly surprised that using the cartridge filter I have have had considerable success in cleaning up my tank and my corals look much healthier. Pros: The whole thing fits in my tank through it is fairly big, which may be a factor in anything smaller. I have been able to clean and reuse my original filter several times, through I have also purchased a 2nd filter which I rotate. Filter life varies but is now approaching 3 to 4 weeks before the filter become very noisy. The flow rate is very good and I use it to help move water around my live rock. It is fairly easy to clean, through kind of a pain to move in and out of the tank. Replacement filters are not expensive and they can be re-cleaned often. I am still using the first two after 6 months of use. Cons: The filter gets very noisy as it clogs which depending on how often you have to clean it may be annoying. The filter is fairly large making it suitable for a 75 gallon or larger tank. It might be OK in a 50 or smaller tank depending on how much room you have. It has a pretty good flow rate, which may or may not be a problem, or a plus for you.

## Features

- 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.
- Included Components: Marineland Magnum Polishing Internal Canister Filer (Ml90770)

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Customer Reviews | 4.0 out of 5 stars 3,423 Reviews |

## Images

![Magnum Polishing Internal Canister Filter, For aquariums Up To 97 Gallons, 10.5 IN (ML90770) - Image 1](https://m.media-amazon.com/images/I/81GbNk+7RiL.jpg)

## Available Options

This product comes in different **Size** options.

## Questions & Answers

**Q: Why is there a rattling sound when this works which is very annoying**
A: There should not be a rattling sound with this filter, unless it has pulled something into the impeller area that needs removing.  We would recommend unplugging it and taking it apart to check the impeller for any signs of damage or clogging.  If you need assistance, please do not hesitate to call the Marineland Consumer Relations Team at 1-800-322-1266.

**Q: What replacement impeller fits in this model?**
A: The part # is ML90515-00 and may be ordered by calling customer service at 1-800-322-1266, 7:30-5:30 EST, Monday through Friday. If more info is required: http://www.marineland.com/contact-us-aquarium-help-and-support/Email-Marineland-contact-us.aspx

**Q: How do you charge with diatom earth ? Tried for over an hour, would not charge.**
A: I put the DE in a jar of warm water shake it up to mix it then place the filter in a large bucket that you can fill enough to submerse the filter and turn it on. Pour the de solution in and wait until the water is clear then you can use the filter in your tank. Works awesome. Make sure you have the foam ring under the filter inside the canister.

**Q: what micron size does it filter? bacteria, algae, etc are too small for most filters to remove.**
A: I put it in my algae bloomed tank and it fixed the problem

## Customer Reviews

### ⭐⭐⭐⭐⭐ Best-in-Class Diatom Filter Alternative
*by K***D on August 25, 2025*

After 35 years using a Vortex D-1 filter, its pump head started leaking. Imagine that!!! After some searching, I found the Marineland Polishing Canister Filter at a reasonable price here on Amazon that can polish your aquarium's water with diatomaceous earth much easier. First try IT WORKED COMPLETELY. I say easier because, the Vortex had hoses and a large filter canister that were all external. The Marineland filter sits in your tank and does the same job. My tank is 35 gallons connected to Fluval 306 Canister Filter and the Marineland filter is not too big and visible if I put it on a sidewall. First day - it's very quiet - so we'll see what happens in the future as other buyers have reported increased noise as filter ages. Charging it is a breeze. After running for about 3 hours, my cloudy water completely cleared - just as the Vortex did. I'll shut the Marineland down and run it as needed just like I did with my Vortex. The only question now is, do I have to recharge the Marineland Filter after each use to get particle coverage on the internal filter element. We'll see on that. Make sure when you charge your filter with diatom powder, you use the Marineland recipe - 6 tablespoons/charge, not what other YouTube Bloggers say - 6 teaspoons/charge. (By the way, 6 tablespoons is 1/3 of a cup.) Enjoy this product - my Vortex has been relegated to recycle! PS The Middle photo is a before and the far right photo is an after 1 hour of filtering.

### ⭐⭐⭐⭐⭐ Happy with purchase
*by J***N on July 8, 2022*

So far I have been happy with this purchase. I purchased it for my 75 gallon reef tank with a few fish and some soft corals. The tank has live rock and a protein skimmer, and I have tried and abandoned a number of different hang-ons (didn't work), and cartridge filters (too risky). Living in an apartment where any water spill will run down below me, I just could risk using anything outside of the tank, which is one of the reason that I got rid of my sump when downsized my tank size. However I clearly needed some type of mechanical filter. So without much hope, I decide to try this one, without having to make another big investment. I have been pleasantly surprised that using the cartridge filter I have have had considerable success in cleaning up my tank and my corals look much healthier. Pros: The whole thing fits in my tank through it is fairly big, which may be a factor in anything smaller. I have been able to clean and reuse my original filter several times, through I have also purchased a 2nd filter which I rotate. Filter life varies but is now approaching 3 to 4 weeks before the filter become very noisy. The flow rate is very good and I use it to help move water around my live rock. It is fairly easy to clean, through kind of a pain to move in and out of the tank. Replacement filters are not expensive and they can be re-cleaned often. I am still using the first two after 6 months of use. Cons: The filter gets very noisy as it clogs which depending on how often you have to clean it may be annoying. The filter is fairly large making it suitable for a 75 gallon or larger tank. It might be OK in a 50 or smaller tank depending on how much room you have. It has a pretty good flow rate, which may or may not be a problem, or a plus for you.

### ⭐ Faulty impeller design = horrible noise
*by A***R on September 22, 2023*

TL;DR: Major design flaw. Impeller is not designed to properly sit in the motor unit and just grinds unbearably. Taking apart and cleaning (a nuisance at best) will temporarily resolve. Seems impossible to order replacement impellers so if you need to fix it you're SOL unless you want to drop money on a new one, which will inevitably have this issue again. I've been a fish hobbyist for over a decade, and in that time I've concurrently kept dozens of tanks with different species, sizes, water types (fresh, salt, brackish). I've even worked in the trade before. When I moved into my house a year ago I decided to get a large show tank for the living room, and decided to go with an internal filter because on average they're easier to maintain than external canisters and less ugly than overhanging ones. I've used many different brands for my other tanks, mainly Fluval and Aqueon, but I went with a Marineland for this one because they used to be really good. This thing will be whisper-quiet right until you're passed the return window (convenient!), and will do a good job keeping your tank clear. 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 short while. It wasn't long until no amount of cleaning, weekly or daily, could fix the horrible grinding noise that this thing would make. Seriously, I'm great at tuning out sound but this was god-awful. I felt embarassed to have guests over it was so bad. I concluded after taking apart every 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 their website it appears they've been out of stock since pre-pandemic. They're still selling the model, but you cannot buy the impeller separately, which means the only option is to buy a new unit, which is ridiculous company practice. But don't worry! Customer service responses on their Q&A indicate that the part will be coming back "soon." This is, of course, the same response that you'll see if you keep scrolling to customer questions from 2+ years ago. They're not intermittently out of stock, because you can see multiple people have been patiently awaiting replacements for all that time. I bit the bullet because I assumed I just got a bad one, and I didn't want to completely change my set-up. But less than two months in to this new one, it's already making the grinding noise. I'm writing this review with the unit completely stripped and disassembled in the other room, and after doing extensive research it seems like this is a common problem for this model. Their company page for the impeller is littered with people complaining about this issue and canned service responses indicating "it just needs a good clean." I've taken apart MANY motors, and the issue is not that it needs a good clean. It's not even that it needs some oil (tried), some o-rings to soften the impeller rod ends (tried), or a good flush (tried). You'd have to re-cast the piece entirely and tweak the housing to get it to work as intended. My partner, handy with bigger motors and mechanical parts, took one look at it spinning and concluded the same before I even managed to get it off the motor housing. I know this is long-winded, but honestly I'm just frustrated that it seems like they're willfully ignoring a severe design flaw, and seem to be fine selling more units of this without offering the replacement parts they must know will be needed at some point. Shame, but I don't think I'm going to buy Marineland ever again. Marineland used to be my number one recommendation to new hobbyists but even though set up is simple, maintenance of this model is NOT beginner- or consumer-friendly. Blegh. If you get this model, just use it for infrequent water-polishing (note, it doesn't come with DE or a polishing medium, so you still would have to get that separately, and ensure that it's the right size for the housing unless you want dirt soup in your tank). Don't purchase it as a filter.

## Frequently Bought Together

- MarineLand Magnum Polishing Internal Canister Filter, For aquariums Up To 97 Gallons, 10.5 IN (ML90770)
- Marineland Micron Cartridge, Fits Magnum Canister Filters
- Beaufan 4 Pack Micron Cartridge Compatible with Canister Filters & Polishing Internal Canister Filter ML90770, Compare to Part# PA0140

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*Product available on Desertcart Romania*
*Store origin: RO*
*Last updated: 2026-03-14*