Is this to use in replacement of tbe carbon media?

This filter media is designed to be used by itself, without the carbon media container or carbon. Its purpose is to polish the water so it will pull very fine particles out, causing it to clog rapidly. Be sure to follow the cleaning instructions for it to get multiple uses from it.

When do i replace the micron polishing filter?

It’s interesting. The micron polishing filter works great, but for only about a week at a time. I didn’t know this when I started using it instead of my Charcoal Filter system. I finally figured out that I needed to clean it at least once a week if not sooner. I’ll probably go back to the original filtering system with Charcoal and only use the Micron filter if my tank becomes cloudy. I have a 55 gallon take and 3 Micron Filters and I now clean 2 of them at a time with a 3 to 1 water to bleach. Example: 700 ml bleach to 2100 ml of water.

What do I use to clean the micron cartridge

I soak it overnight in a 2-gallon pail of water with 1 cup of Clorox added to the 2-gallons of water.(you have to weigh the cartridge down or it will float) IMPORTANT ... I then empty the pail and soak the cartridge in a 5-gallon bucket filled with 5-gallons of plain tap water for FOUR MORE DAYS. I had two cartridges for each of my filters and I rotated them this way every 5 days. Some people go with a stronger solution of Clorox, but they use a dechlorination agent in the rinse. Remember nothing will kill your fish faster than chlorine in the water!!!

Will this fit the ML90770?

Yes, it mentions it fits all Magnums, including the Magnum Polishing Filter so it will definitely fit it.

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MarineLand Micron Filter Cartridge for Magnum Canister & Polishing Filter

MarineLand Micron Filter Cartridge for Magnum Canister & Polishing Filter

Product ID: 4115195

Details

Brand
MarineLand
Compatible Devices
Marineland HOT
Material
Cotton
Number of Pieces
1
Reusability
Disposable

🧼Unique foam filtration

♻️Disposable & easy replacement

⚙️Precision fit for Magnum filters

17485CFA

Duties & taxes included

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Sold byAmazon SenegalDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

♻️ Keep your aquarium pristine with the power of precision filtration!

TRUSTED QUALITY - Backed by MarineLand’s 4.7-star rating from over 1,500 aquarium enthusiasts.
HYGIENIC DISPOSABLE - Single-use cotton cartridge ensures fresh filtration every time—no mess, no fuss.
LIGHTWEIGHT COMPACT - Slim 3.88 x 4.63 x 7.13 inch design keeps your filtration system sleek and efficient.
SEAMLESS COMPATIBILITY - Perfectly fits both Magnum and HOT Magnum canister filters for hassle-free upgrades.
EFFORTLESS AQUARIUM CLARITY - Specially designed foam sleeves trap debris for crystal-clear water.

The Marineland Micron Cartridge is a disposable cotton filter cartridge designed exclusively for Magnum and HOT Magnum canister filters. Featuring unique foam sleeves, it efficiently traps debris to maintain crystal-clear aquarium water. Lightweight and compact, this cartridge is highly rated by users and offers a simple, hygienic replacement solution to keep your aquatic environment healthy.

Specifications

ASIN	B0002565Q6
Best Sellers Rank	#33,412 in Pet Supplies ( See Top 100 in Pet Supplies ) #322 in Aquarium Filter Accessories
Brand	MarineLand
Brand Name	MarineLand
Compatible Devices	Marineland Magnum, Marineland HOT Magnum
Customer Reviews	4.7 out of 5 stars 1,514 Reviews
Global Trade Identification Number	00047431014008
Included Components	Aquaria 45001400: Marineland Micron Cartridge For Mag/Hot Canister Filters 220/350
Item Highlight	Ready-To-Use, Fits Marineland Magnum Canister Filters & Magnum Polishing Internal Filters, Contains 1 Filter
Item Type Name	Pet Supplies
Item Weight	22.68 g
Manufacturer	Tetra
Manufacturer Part Number	PA0140
Material	Cotton
Material Type	Cotton
Model Number	PA0140
Number of Packs	1
Number of Pieces	1
Reusability	Disposable
UPC	047431014008
Unit Count	1 Count
Warranty Description	See Label.

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