MARINELAND Bio-Wheel Penguin Aquarium Power Filter, 50-gal -

Marineland Bio-Wheel Penguin Aquarium Power Filter

By Marineland
Rated 3.5182 out of 5 stars

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$25.43Chewy Price
$51.29Chewy Price

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This Item - Marineland Bio-Wheel Penguin Aquarium Power Filter, 50-gal
Rated 3.5182 out of 5 stars
$25.43Chewy Price

Spend $50, Get $15 eGift Card

Marineland Bio-Wheel Penguin Rite-Size C Filter Cartridge, 6 count
Rated 4.7278 out of 5 stars
$7.99Chewy Price

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About This Item


  • Offers complete three-stage filtration (mechanical, biological & chemical)for both freshwater and saltwater tanks.
  • Rite-Size filter cartridge traps debris and removes odors and discoloration, providing mechanical as well as chemical filtration.
  • For maximum efficiency, fast-acting Black Diamond Premium Activated Carbon is used in each cartridge.
  • An extra-large BIO-Wheel rotates to cultivate the beneficial bacteria that remove toxic ammonia and nitrates from the water.
  • BIO-Wheel features noise-reducing vented covers and adjustable intake strainers.

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Fish TypeTropical Freshwater, Marine FishTropical Freshwater, Marine FishTropical Freshwater, Betta, Cichlid, GoldfishTropical Freshwater, Marine FishTropical Freshwater, Marine Fish
Aquarium TypeFreshwater, SaltwaterFreshwater, SaltwaterFreshwater, SaltwaterFreshwater, SaltwaterFreshwater, Saltwater
MaterialPlasticPlasticPlasticPlasticMesh, Synthetic Fabric

Questions & Answers

46 Customer Questions

Can you adjust the flow rate?
Answer by ChewyApr 23, 2018
There is a gray lever that opens and closes, allowing water movement at mid-level. If closed, the filter will only pull water from the bottom of the tank.

My bio wheel will not spin.
Answer by ChewyDec 31, 2019
Usually when the Bio-Wheel won't spin either the water level is low, the filter system needs cleaning or the Bio-Wheel bearings are misplaced or dirty. Take the filter off of the tank, take it apart, and give it a good cleaning using warm water and distilled white vinegar. Make sure to pay close attention to the impeller, motor, intake tube, impeller housing and bearings. Rinse them well after cleaning and re-install.

Does it come with filter cartridges?
Answer by ChewyDec 22, 2018
A filter cartridge is included with purchase.

will this work for a 40 gallon "tall" octagon fish tank??
Answer by ChewyMay 22, 2018
The Penguin 200 would be an ideal filter for a 40 gallon octagon tank as it should fit on the narrow panels of the tank, and has a long extension tube on it. Also, if you find you need to extend the tube even further, you can buy a mid-level strainer and an extension tube to lengthen it.

ReviewsWrite a Review

Rated 3.5182 out of 5 stars
357 Reviews
Would recommend to a friend

357 Customer Reviews

Filter by reviews that mention

Rated 5 out of 5 stars
By aquarium1enthusiasts on Nov 28, 2022

Learn your product Great product will last yrs

This is a great product have been using for 2yrs not a problem other than my own ignorance.many folks here having problems ive experienced not knowing how to work a good filtration system. If the filters are clogged or water level low the bio wont spin you still have to clean your tank after water change make sure suction pipe is not jammed in or pushed out easy does it..fill the pump with water it gets it going. This product doesn't just quit working. And its only loud when the tank isnt filled to proper level.

Rated 5 out of 5 stars
By Holywater on Jan 2, 2023

Top notch very happy

I have a 55 gallon aquarium. With two yellow bellied sliders. This filter keeps the water clean. Is quite and has a nice water fall effect. Peaceful. I have to clean the filters once a week since turtles are very messy.

Rated 5 out of 5 stars
By Silver on Oct 27, 2022

It's on point!

I couldn't believe how easy it was to order products for my fish. I found it to be simple and easy to do so. What was even better is that I received my order the next day. Thank you for simplicity .

Rated 5 out of 5 stars
By Grammie on Nov 18, 2022

fastest delivery

Such prompt service and accurate items. Prices are a lot better than my favorite pet store. THANKS CHEWY. My cats and fish thank you too.

Rated 5 out of 5 stars
By Maggiedog on Nov 2, 2022

Fish tank filter

This Marineland filter is exactly what I needed. Easy to install and it works perfectly.

Rated 5 out of 5 stars
By Fishcaretaker on Aug 11, 2022

Love it best product

I have been using one for around 12 years now I bought a new one because I needed parts and they are out I will always use these they work great and do an awesome job have no complaints

Rated 5 out of 5 stars
By Crablady on Jun 30, 2022


These are the best filters ever! I have spent a small fortune on different filters in the past, and these are by far the best. Rather inexpensive, quiet and easy to set up and the cartridge is easy to change.

Rated 1 out of 5 stars
By Meli on Aug 3, 2022

Don't waste your money

Worst filter I've ever bought! Started making a horrible noise a week after I set it up and shut down 2 months after. It will not turn on.

Rated 5 out of 5 stars
By Shervae on Nov 17, 2022

Exactly what I expected

My fish have life now My pump is working GOOD !!!!

Rated 1 out of 5 stars
By Housco on Apr 25, 2022


Purchased to replace a worn out Penguin with two bio-wheels I had used for years. The new one was Loud. I ran it for 3 days and readjusted the impeller to no avail. Laughable it was so loud you could hear it from another room in my house. Will keep as a replacement for the other brand filter I bought which is so quiet I have to check to see if it is running. Filter worked but the volume was unbearable.