Marineland Bio Wheel Assembly Fish Aquarium Filter

By Marineland
Rated 3.5 out of 5 stars
$7.02Chewy Price
$12.98Chewy Price
In Stock
FREE 1-3 day delivery on first-time orders over $35

About This Item


  • Replacement Bio Wheel Assembly for Penguin 200B and 350b Filters.
  • Delivers superior wet/dry filtration for nitrifying bacterial growth and eliminating toxic bacteria and nitrate.
  • Uses aerobic bacteria for biological filtration.
  • Bio Wheel does not need to be replaced unless it is damaged and should never be cleaned.
  • Needs to be run for a 24-48 hour breaking-in period.

See More

Frequently Bought Together

Marineland Bio-Wheel Penguin Rite-Size C Filter Cartridge, 6 count
Rated 4.7219 out of 5 stars
$7.99Chewy Price

Buy 2, Get 3rd Free- Mix & Match

Total Price: $19.10

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Questions & Answers

13 Customer Questions

how often should this cartridge be change
Answer by ChewyJan 25, 2020
The MarineLand Bio Wheel does not need to be replaced unless it is damaged, and should never be cleaned.

When is the biowheel supposed to be turning? I have two filters and the wheels are seldom turning.
Answer by ChewyMar 05, 2022
This filter will turn continuously on its own, until it builds up a lot of bio load, then it will start and stop. Hard water deposits may stop the wheel from turning and will need vinegar to clean it out. Make sure the purple bearings are properly in place, and clean so the bio wheel can turn correctly.

Will this wheel fit the 450
Answer by ChewySep 08, 2021
This wheel is suitable for assembly with the Penguin 200B and Penguin 350b filters.

What are the dimensions of this bio-wheel?
Answer by ChewyJul 11, 2022
This filter fits the Penguin 200 and 350 models and is PRBW2350B (PENGUIN 200-350) 5 1/8 X 2 1/8 inches.

ReviewsWrite a Review

Rated 3.5 out of 5 stars
24 Ratings
Would recommend to a friend

24 Customer Reviews

Rated 5 out of 5 stars
By Linda on Nov 19, 2023

Fast, Easy, Perfect!

As always, I’m completely satisfied!

Rated 5 out of 5 stars
By 57Penny on Jul 26, 2023
Top 500 Contributor

It fits!

I know you are not supposed to change these, but after a few years it was time.

Rated 1 out of 5 stars
By Dennis on Nov 14, 2023

The wheels were both smashed

Rated 5 out of 5 stars
By Steven on Jun 11, 2023

Marineland Bio-Wheel

I could not find this anywhere. You had it at a reasonable price. Arrived very quickly.

Rated 5 out of 5 stars
By Mojo on Aug 16, 2023

Perfect fit

Perfect replacement for old one.

Rated 1 out of 5 stars
By Saml on Apr 1, 2023

Wouldn't Reccommend

Everyone knows this design is awful, Chewy made it worse, as it arrived damaged.

Rated 1 out of 5 stars
By LilyR on Jan 24, 2023

Price right but

The bio wheel arrived torn. Shipping and prices from Chewy great.

Rated 1 out of 5 stars
By Robbin on Jan 2, 2023

Wrong item

I ordered the wrong size. It was the only one that I could find

Rated 5 out of 5 stars
By Evette on Nov 9, 2022

I love this wheel i love to see it spin

Me and my Mom love watch the wheel spin around just right for the tank

Rated 1 out of 5 stars
By Biowheel on May 16, 2022

Wrong Size

Wrong size to big..Need size for Marineland Bio-Wheel Penguin Rite Size B. Power Filter but now I see hard to find. Please Help..