BIO-Wheel® Assembly - 200B and 350B

Product No. PRBW2350B


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BIO-Wheel® Assembly for the Penguin® 200B and 350B.
BIO-Wheel® Assembly - 200B and 350B is rated 4.7 out of 5 by 25.
Rated 5 out of 5 by from Just what I wanted Excellent, speedy delivery for the product ordered.Appreciate the follow-up email
Date published: 2016-07-31
Rated 5 out of 5 by from Pefect fit Normally you don't have to replace these, but since I purchased a used filter, I was missing the bio-wheels. Works great, last long time!
Date published: 2015-05-08
Rated 5 out of 5 by from Great product Fast delivery, was having trouble finding item in stores. Thank you Marineland for your help. Will order from you in the future.
Date published: 2015-01-05
Rated 4 out of 5 by from I like the quiet operation of the filter and wheel. This is the second fish tank I have owned, and this one runs much better and quitter. However, the package the tank and filters came in did not identify which wheel went into the filter and I had to go on line and question to find out which was right. Other than that, everything was just as expected.
Date published: 2014-12-31
Rated 5 out of 5 by from this bio filters is great great product high cost on shipping to customers for this product only
Date published: 2014-11-07
Rated 5 out of 5 by from best parts to match exactly the model I have, so much easier to order online The pet store was always saying there shipment didn't come in, so I decided to order directly from the manufacturer and I love it! So fast, I will continue to order online. Thank you!
Date published: 2014-10-08
Rated 4 out of 5 by from so far so good. This is my first type of filter and it hasn't disappointed me yet.
Date published: 2014-09-24
Rated 5 out of 5 by from Works great Helps filter the water in your aquarium. Works like a charm!
Date published: 2014-08-23
Rated 5 out of 5 by from Great product and delivery Very pleased that the Biowheel is now sold separitly , and was shipped in a very timely manner
Date published: 2014-05-13
Rated 5 out of 5 by from I would reconmind this fish tank filter system to everyone I like this filter system, it really filters out alot of impurities in the water, especially after taking out about 10 gallons of water to clean the tank, it filters out al;ot of sentiments and clears the water very quickly
Date published: 2014-05-12
Rated 5 out of 5 by from great replacement wheels. My old wheels fell apart after a few years of use. Stores wanted 20$+ per wheel to purchase. Thank gosh i found it here for less than 9$ each. Arrived in very nice safe packaging , i was very haplpy they were not damaged. I would buy them again from here in a heartbeat. Thank you for having great products at great prices.
Date published: 2014-03-05
Rated 5 out of 5 by from A very good product for the aquarium. I BOUGHT THIS AS A SECOND WHEEL FOR MY AQUARIUM. Great.
Date published: 2014-02-03
Rated 5 out of 5 by from It was just what I needed. I will definitely buy this again. Thanks for the fast service.
Date published: 2014-01-10
Rated 5 out of 5 by from These wheels are a good solid product. Any issue I have had with marine land has been handled easily by their customer service team. The wheels are great, but the system running these wheels is not great.
Date published: 2013-09-22
Rated 5 out of 5 by from Item is great, last a long time and WORKS My only grip is that they don't allow retailers to buy parts that wholesalers don't. So you have to buy at full retail and then sell to the public.
Date published: 2013-08-13
Rated 5 out of 5 by from It takes care of all the ammonia & nitrates that are harmful to the fish. Low maintenance with little or no cleaning at all.I have the 350 Penguin power filter.A great product thus resulting in little or no testing at all.It does not however control the PH level.That is done with a separate test kit.
Date published: 2013-08-05
Rated 4 out of 5 by from Works great! I know you aren't supposed to replace a BioWheel unless it gets damaged... My turtles took the cover off my filter and pulled out my old wheel a couple of times- it was even submerged in their water for a few hours and mostly unraveled. I got a new wheel and was pleased with the shipping time, but the quality seemed like it could have been slightly better. The wheel doesn't stay centered on the axle, and the mesh accordion covering was coming away from the frame, similar to the way my old one was. It does fit in my filter though an is functioning as it should- my water looks wonderfully clear again.
Date published: 2013-08-03
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What is the size of this? I cant tell if this is what i currently have

Asked by: mwfink
Why don't you get the model number off of the filter cover? We mold it directly into the cover, usually the upper right hand corner. The Penguin 200 and 350 bio wheel is 5 1/8” X 2 1/8”. BREX
Answered by: BREX
Date published: 2017-11-24

I have a 60 gal tank with a Marineland Dual filter system that I would like to purchase new Bio-Wheels for but do not know what item number to get. The filter cartridge is a Size C. The Bio-Wheel looks like it measures about 5" (?) Please help me asap...

Asked by: rmc3
You own a Penguin 350 filter and need BREX
Answered by: BREX
Date published: 2017-11-24

Does this wheel fit the Penguin 200 filter?

Asked by: Jimmyc394
Yes, it does indeed. BREX
Answered by: BREX
Date published: 2017-08-01

What size filter does this fit? 

Asked by: melmoran
Thanks for asking! This bio-wheel fits the Penguin 200 and 350 models.
Answered by: Customer Service
Date published: 2017-07-21

Is this the replacement part for PR2002? I need the bio wheel for our Marineland Bio-Wheel

Asked by: Janec5
No, it will not replace that one. You need: BREX
Answered by: BREX
Date published: 2017-07-17

I bought this part on Amazon and you sent it to me. It was sent in a plastic shipping envelop and was crushed. I sent it back. If I buy it from you, can you guaranty that it will be shipped in a way as to protect it from being crushed?

Asked by: Niteprowl2
After reviewing the various options for purchasing this on Amazon, it looks like your order either shipped from Amazon or from a third party, not us. We ship via UPS, and place the part in a box. There is no way to guarantee UPS will not crush something. BREX
Answered by: BREX
Date published: 2017-06-13

my aquarium will need a new bio wheel but not sure of the size. how can i know which one to order?

Asked by: cjmm
You need to know what aquarium or filter system you own. All of our filters have model names and numbers molded into their filter covers. BREX
Answered by: BREX
Date published: 2017-05-25

I have a 350 and one of my biowheels has a torn pleat. It does not seem to affect operation. Should I replace it or just leave it alone?

Asked by: KennyJ
Hi KennyJ, If the bio wheel is still rotating, I would just let it be. It will not affect the biological filtration of the bio wheel. BREX
Answered by: BREX
Date published: 2017-04-27

Where is the number on the filter? I'm not sure which one I need.

Asked by: Swilliams
The model number of your filter is molded right into the top of the cover. Depending on how old it is, it should be in the upper right hand corner. BREX
Answered by: BREX
Date published: 2017-04-18

Does this filter fit on an axle of some sort, because I am missing that part. When my daughter was taking care of my large goldfish, she developed ich, so they threw the wheel away, apparently the whole assembly. My water is clouding. Help!

Asked by: AnnaMarie
Yes, they are called bearings, and are purple. Do a partial water change, and add Marineland Bio Spira to boost your biological filter. Here is a link to the bearings: For future reference there is no need to throw the bio wheel away after illness or medicating. BREX
Answered by: BREX
Date published: 2017-04-17

when i order a new bio wheel do i also need to order the bearings?

Asked by: lisashap
Only if yours are missing. BREX
Answered by: BREX
Date published: 2017-04-17

My Bio Wheel won't turn. There doesn't seem to be enough water flow. It did work, it just quit about a week ago. I cleaned the pump unit and didn't find anything? What could be wrong? Thanks

Asked by: tomcat
Run a baby bottle brush through the intake tube, soak the impeller in distilled white vinegar, and take a paper towel soaked in vinegar, pack it into the motor, and twist it around. If you have hard water deposits you will need the vinegar to clean it out. Also, make sure the purple bearings are properly in place, and clean so the bio wheel can turn correctly. BREX
Answered by: BREX
Date published: 2017-04-10

What is the diameter and length of this product?

Asked by: James M
5 1/8” X 2 1/8” BREX
Answered by: BREX
Date published: 2017-03-24

What is the length... I cannot find/ remember what size filter I am using

Asked by: Kristyk
5 1/8” X 2 1/8” is the size for the Penguin 200 and Penguin 350 filters. BREX
Answered by: BREX
Date published: 2017-03-20

will this fit my penquin bio wheel 200

Asked by: catcher
Yes, it certainly will! BREX
Answered by: BREX
Date published: 2017-02-13

looking for two bio wheels for a 350 . i believe they are 6 inches long. can you help find them

Asked by: charlt57
The link you provided is the one for the bio wheels; you can order them from our site. BREX
Answered by: BREX
Date published: 2017-01-30

how often should this be cleaned or can it be rinsed out? Have five six inch fish in 55 gal aquarium. The bio wheels are black and not turning all the time.

Asked by: Mariel
There is no recommended amount of time in between cleanings because we don't typically recommend cleaning. You can occasionally take a q tip and run it between the folds lightly to remove excess build up, but the bio wheels, in an overstocked tank like yours, are going to start and stop because they are overloaded. If you decide to replace them, float the new bio wheels in the tank first, prior to swapping them out. BREX
Answered by: BREX
Date published: 2017-01-30

I've used my bio wheel for 10 months and recently moved. I just set my tank back up. My bio wheel has been dry in a box with my other tank accessories for the past three weeks, do need to buy new ones?

Asked by: Carmezzi
No, not at all! You can still use the bio wheel; it will grow new bacteria on it once it is in operation. BREX
Answered by: BREX
Date published: 2017-01-23

I recently installed 2 Penguin 200's on my daughter's tank. One bio wheel is FAR louder than the other. The noise switches filters if I swap the wheels.  I have already tried twisting the wheel a hair.  The noise is intolerable.  Any suggestions??

Asked by: Dr_windo
Depending on how long these filters have been in use, you may want to float the bio wheel for a day or two. In brand new systems, customers found that bio wheels could be really noisy until they absorbed enough water to "break them in". If the bio wheel appears to be warped, just give us a call at 1-800-322-1266 for assistance. BREX
Answered by: BREX
Date published: 2017-01-04

what is the model number of the bio wheel for an Eclipse 30 gallon aquarium?

Asked by: BeccaB
Thank you for your support of Marineland products! The item number is PR2002; you may order it through this link: BREX
Answered by: BREX
Date published: 2016-12-15

does this fit the marineland penguin 350 bio-wheel power filter?

Asked by: buckeyeskeeter
Yes, it sure does! BREX
Answered by: BREX
Date published: 2016-11-03


Asked by: ZEAK
5-1/8” X 2-1/8” BREX
Answered by: BREX
Date published: 2016-10-24

is this for the marineland pfo 330b

Asked by: gammy322
No, it is not. Here is a link to the correct one: BREX
Answered by: BREX
Date published: 2016-09-12

i need one bio wheel my is about 5 " can i use the one you show here they alike and i need one bad

Asked by: korean 51
If you have a Penguin 200 or Penguin 350, this biowheel will fit. If you are unsure what filter you own, look at the top of the filter cover for the model name and number molded into it. BREX
Answered by: BREX
Date published: 2016-07-18

What are the dimensions?

Asked by: Susanlt
5 1/8” X 2 1/8” BREX
Answered by: BREX
Date published: 2016-06-17


Asked by: DonnaJ
9.5 inches is the length BREX
Answered by: BREX
Date published: 2016-05-16

Is this for the Penguin 350 power filter?

Asked by: Angie2016
Yes, it is. BREX
Answered by: BREX
Date published: 2016-03-22

Is the biowheel an essential part of the filter?

We bought a used Penguin 350 and there are no biowheels included. Are these needed for it to work correctly?
Asked by: Kaelee
Those are available separately. They are the filter's main media for biological filtration. The filter can operate without them, but you will get less filtration. BREX
Answered by: BREX
Date published: 2016-01-25

Bio Wheel Stop turning

When i first purchased the Bio wheel system, now my bio wheels stop turning
Asked by: sebastian
Most likely you need to take the entire filter system apart and give it a good cleaning. Soak the impeller in distilled white vinegar for about 15 minutes and swab out the reservoir it resides in with vinegar as well. BREX
Answered by: BREX
Date published: 2015-12-28

I need a replacement bio wheel assembly for my penguin 200. Isee you stock them but they are out of stock. WILL YOU BE GETTING ANY SOON?

Asked by: MELANI
Sometime in the second half of October. You might try or in the meantime. BREX
Answered by: BREX
Date published: 2015-09-29
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