Marineland Magnum 350 Bonded Filter Cartridge, 3 count

Deal
Skip image gallery
Slide 1 of 4
$5.66 First Time Autoship Price
this order
Save 35% (up to $20) today when you set up Autoship. 
$8.27 Autoship Price
(-5%) future orders
  • Keep saving 5% on every order
  • Get deliveries on your schedule
  • Skip, change, or cancel anytime
$8.71 Chewy Price
($2.91 /ea)
Save $5.68 (-39%)
$14.39 List Price
Promo, New Customers Only: Spend $49+, Get $20 eGift Card + Free Shipping with code: WELCOME
In Stock
FREE 1-3 day delivery on first-time orders over $35
Free 365-day returns

No interest if paid in full in 6 months on PayPal purchases of $149+. .

About This Item

Details

  • Routine media replacement ensures optimum filter performance at all times.
  • Custom designed for the Magnum 350 Micron Cartridge and Carbon/Media Container.
  • Maintains aquarium water quality with efficient mechanical and chemical filtration.
  • Reduces the accumulation of waste and dirt particles that would prematurely clog the filter.
  • Helps extend the cartridge life.

Instructions

Frequently bought together

Questions & Answers

Be the first to ask a question.
Reviews
Write a Review
4.8
Rated 4.8 out of 5 stars
29 Ratings
Terms & Conditions

13 Customer Reviews

Rated 5 out of 5 stars
By Dennis on Jan 11, 2026

In stock and arrived quick

Hard to find item

Hard to find item

Rated 5 out of 5 stars
By Sylvester on Jul 24, 2025

They fit properly and work as advertised.

Product was boxed securely and arrived on time.

Product was boxed securely and arrived on time.

Rated 5 out of 5 stars
By Richard on Feb 14, 2025

Fits the filter great and does a great job

A good price

A good price

Rated 5 out of 5 stars
By Laura on Sep 15, 2022
Top 1000 Contibutor

works well with my HOT filter.

these are nice and thick and last awhile. Will purchase again.

these are nice and thick and last awhile. Will purchase again.

Rated 5 out of 5 stars
By Fishing on Mar 4, 2022

Best Buy any where

Item as described. Excellent product, the only bump in the road was the driver DIDN'T leave the box in front of my door as per instructed. This was my first purchase

Item as described. Excellent product, the only bump in the road was the driver DIDN'T leave the box in front of my door as per instructed. This was my first purchase from CHEWY.

Rated 5 out of 5 stars
By Cora on Apr 9, 2021
Top 100 Contributor

Reliable product. Always performs as expected.

I've been using these in my aquariums for many years and have never been disappointed. They do an excellent job of keeping the water clean.

I've been using these in my aquariums for many years and have never been disappointed. They do an excellent job of keeping the water clean.

Rated 5 out of 5 stars
By Donthefishbreeder on Mar 6, 2021

Perfect Fit

These filters are the original! They work perfectly. I love the way they clean up a 55 gal. tank in no time. Thank You Chewy

These filters are the original! They work perfectly. I love the way they clean up a 55 gal. tank in no time. Thank You Chewy

Rated 5 out of 5 stars
By Schmabes on Nov 19, 2020

El filtro insertos were correcto.

Yep, got the right ones. Okay, here are some more characters. . . . . .

Yep, got the right ones. Okay, here are some more characters. . . . . .

Rated 5 out of 5 stars
By Janice on Sep 2, 2020

Great price!

Usually buy these in local pet store. Even with delivery charge, much better price with Chewy.

Usually buy these in local pet store. Even with delivery charge, much better price with Chewy.

Rated 5 out of 5 stars
By Fishy on May 15, 2018

Great Service

Great filters. Chewy offered the best price for these filters and they were very quick in shipping them. Will never get our filters anywhere else.

Great filters. Chewy offered the best price for these filters and they were very quick in shipping them. Will never get our filters anywhere else.