BIO Wheel

Q. Do I need a BIO-Wheel?

Yes. Biological filtration is critical to the success of any aquarium. If your system has a BIO-Wheel, a culture of ammonia-neutralizing bacteria will grow on its surface. The bacteria will thrive because as the BIO-Wheel provides "wet/dry" biological filtration. As it rotates, the bacteria are nourished by the larger amount of oxygen in the air and water.

Q. My BIO-Wheel isn't turning. What should I do?

If your BIO-Wheel has, in fact, stopped completely, it is probably either because the BIO-Wheel is out of position or because water flow is not strong enough to push the BIO-Wheel.

If water flow is reduced...

  • Unplug your system.
  • Inspect the BIO-Wheel carefully to make sure that there are no obvious obstructions to rotation and that it spins freely when in proper position.
  • Remove the impeller housing and magnetic impeller assembly and make sure the impeller assembly is clear of any obstruction and free to rotate. With a clean cloth or brush, clean the impeller, intake tube and impeller housing.
  • Make sure your aquarium is filled to the bottom edge of the aquarium frame or the level specified in your owners manual.
  • Restart your system. NOTE: If you have a power filter that hangs on the back of the aquarium, be sure to fill the filter box with water.

Q. When should I clean or replace my BIO-Wheel?

Unless it becomes damaged, there is no need to ever replace your BIO-Wheel. A BIO-Wheel actually improves with age. 

Q. My BIO-Wheel is making a lot of splashing noise. Is that normal?

When a BIO-Wheel is new, it has a tendency to rotate more rapidly, which can cause a "lapping" noise. Over time, as the bacteria culture grows, the BIO-Wheel will slow and operate more quietly. (To immediately reduce the sound of water hitting the wheel, grab each end of the wheel simultaneously and gently turn them in opposite directions. This will cause the incoming water to contact one side of the wheel before the other, reducing noise level.) 

Are these filters for fresh water tanks?

Asked by: Alon
They are for either fresh or salt water aquariums. BREX
Answered by: BREX
Date published: 2017-03-20

While treating my 60 gal. aquarium with Pimafix, should I remove the bio-wheels?

Asked by: treebug
No, Pimafix will not harm them at all, and removing them will definitely kill off the bacteria. BREX
Answered by: BREX
Date published: 2017-03-20

Can I / should I rinse the bio filter wheel (I have 2 Marineland 350 for almost 2 years and all is good). I noticed few small packets on the wheel that looks as remaining of food, is it okay to rinse under cold water or will it hurt the bacteria? Thanks

Asked by: AviW
It is best to simply use a q tip and swab between the folds rather than rinse the bio wheel. Some people "swish" it gently in water taken from the aquarium during a water change. Do not rinse with cold, chlorinated water though. BREX
Answered by: BREX
Date published: 2017-03-20

What are the dimensions of the penguin 100

Asked by: LJP1
5.5 X 5 X 7.5 BREX
Answered by: BREX
Date published: 2017-03-17

If I have a 38 gallon fresh water tank would the bio wheel 350 be to big of a filter for it? 

Asked by: Mhhh
No, it would not. I have a 38 gallon and have run that filter, along with the Penguin 200 simultaneously, without an issue. I keep small fish such as tetras, typically, live plants, angelfish, etc. BREX
Answered by: BREX
Date published: 2017-03-15

Has the Marineland 350 changed from up 75 to 70 gallon. I just purchased a new one a couple of days ago and the one I received says up to 75 gallon tank. I have seen them on different websites advertised as 70 gallon. What is the differents ? 

Asked by: Zippyman
The new packaging states they are rated for up to 75 gallons now. New research verified the higher flow rate on this product, so we changed the packaging. BREX
Answered by: BREX
Date published: 2017-03-14

HI. My biowheel has white fuzzy mold or something no growing on the edges. is this healthy?? There's black fuzzy too. It's been set up 5 years and never had this.

Asked by: Ashleyzappe
Could be a type of algae most likely. Just remove the bio wheel and using a q tip, clean between the folds. Also, take the filter apart, and clean each piece individually as well. BREX
Answered by: BREX
Date published: 2017-03-14

I've got a deluxe mag350 that came with a biowheels but I cant find the attachment to it from the hose outtake. Where can I get this part?

Asked by: happypoon
If you are referring to connecting the outlet to the bio wheels, the only parts we have left for the Magnum Pro filter are these: http://www.marineland.com/search.aspx?q=bio%20wheel%20pro#/?filter.brand=Marineland. BREX
Answered by: BREX
Date published: 2017-03-14

Does the bio wheel spin at a rapid spin or just slow and spin

Asked by: jackie01
When you first install the filter, it will spin pretty rapidly. Once it absorbs water, it will begin slowing down, and once it builds up a really good bio load, it may actually start and stop. There is no right or wrong speed. Slower is generally better just because the bio wheel is exposed to oxygen for longer periods of time, leading to more biological filtration. BREX
Answered by: BREX
Date published: 2017-03-14

Hi, my Marineland Penguin bio wheel 75 has not worked. It has been off and on, and my 4 year old fish are at risk. They are rare fish. Anyway, any suggestions on how to get it working? Tried starting again, unplugging, cleaning it. PLEASE help. Thx.

Asked by: JacieBoo
If it is starting and stopping so to speak, make sure you do not have sand in the aquarium that could be causing the issue. When sand is in use, you need to place filter floss inside the strainer or put an accessory sponge over the strainer. Another thing that will cause filters to turn on and off are air bubbles. If you have an air stone in the tank, try turning it off and testing the filter. Take the filter apart, removing the intake tube, impeller housing, and impeller. Clean it thoroughly, especially the impeller, and the bottom of the filter box, where the impeller resides in the motor well. You may have some sludge or other build up causing an issue. In the event of hard water or marine water, use distilled white vinegar to clean everything and rinse well. Last, make sure it is plugged into a power strip and not an outlet in case of voltage issues, if this is an older home. A filter's purpose is not to keep the fish alive, but to reduce the maintenance of the tank. So until you determine what the issue is with the filter, step up on the water changes. Vacuum and do 10% at a time, every couple of days, if the filter continues to have an issue. Also, call us directly so we may assist you. 1-800-322-1266. BREX
Answered by: BREX
Date published: 2017-10-26

I'm building a 10gal nano tank with red crystal shrimp and vary tiny rare fish is the penguin power filter 100 safe for fry and baby shrimp or will they be sucked into the filter and if so is there a way to put a protector sponge on the filter intake

Asked by: Arux584
The only type of filter that would be safe for fry and baby shrimp would be a sponge filter, operated by an air pump. If you use the Penguin filter, place filter floss inside the strainers. This comes in bags for just a few dollars and looks like a giant cotton ball. BREX
Answered by: BREX
Date published: 2017-03-10

How come my wheel has stopped spinning and what can I do about it??

Asked by: teens
It is completely controlled by the flow rate of the filter. Most likely you need to take the filter system off of the tank, and take it apart to clean it. Pay close attention to the impeller and the reservoir it sits in. Use hot water and distilled white vinegar to clean it. BREX
Answered by: BREX
Date published: 2017-03-10

Hello. I have a Smallville 2,5 gallon 2 fish aquarium. Is penguin's smallest edition good for me? Or just too much?

Asked by: Tiago
An up to 20gal filter on a tiny 2 gal is way to much suction I suggest looking into Nano tank filters for 5gal or less 5gal being the most suction on your tiny tank if your working with Beta they don't prefer to much water movement as there not strong swimmers but a filter is a must i think tetra and Fulval make nano filters 
Answered by: Arux584
Date published: 2017-03-10

brand new bio penguin 75 in a newly set up tank. (Marineland Starter kit.) Ran for about 60 sec. then stopped. I cleaned filter, water level in tank is right. will not start again.

Asked by: Jakka25
Going to answer my own question. Returned the Bio 75...Replaced with Aqueon LED Pro. Working fine.
Answered by: Jakka24
Date published: 2017-03-07

my penguin 350 filter pads release tons of micro bubbles into the water making it cloudy. what should i do to stop this from happening

Asked by: mike222
Most likely you need to raise your water level in the tank. The spillway of the filter should rest in the water so that there is less splashing. BREX
Answered by: BREX
Date published: 2017-03-15

will the 350 penguin impeller work in the 200 penguin model... I have a 280 penguin I using a 400 impeller works great

Asked by: iceman4856
Iceman4856, Thank you for your inquiry. However, the impellers for our units are not interchangeable. You need to be running the proper impeller for the size of filter system to achieve the proper flow rate. Thank you, Christina
Answered by: MINI
Date published: 2017-03-03

I need the round filter for a Penguin 150 Bio Wheel. Where can I purchase this item?

Asked by: BarbaraKrauth
Barbara, Thank you for your inquiry. You are describing the Bio-Wheel for the Penguin 150. We sell these directly online to our consumers. Please type in the search box PRBW150B and the bio-wheel will become available for purchasing. Thank you, Christina
Answered by: MINI
Date published: 2017-02-28

I have a Penguin bio wheel 100 power filter. I need a new impeller, but not sure which one to order. Confused by product numbers. Which is correct ? Thanks

Asked by: joem
You need the impeller, PRIM100B. http://www.marineland.com/Products/aquarium-parts/Filtration-Products-and-Skimmers/Penguin-Parts/Impeller-Parts/Impeller-Assembly-Penguin-100B.aspx BREX
Answered by: BREX
Date published: 2017-02-23

I have a new emperor 400, the water jet tubes only work for a few seconds before stopping all together, air can be heard gurgling as it stops. I have taken it apart and inspected several times but can't find a noticeable cause.

Asked by: DraxixEntreri
Sounds like either the flow manifold housing cover is missing or not attached properly. You need to disconnect the spray bars, pull up the manifold housing, and check to see if it is in place on the bottom of it. BREX
Answered by: BREX
Date published: 2017-02-21

I own two marineland filters. The 100 and 200 series. I love them both as they are very quiet and work amazing. However I just picked up the 350 for my 55gallon tank and it seems to make a lot of noise. Mainly the motor. Is this common for the larger size

Asked by: Jwhite
No, not really. It should be just as quiet. Remove the intake tube, impeller housing, and impeller and re-connect then re-seat them. These parts may not have been installed correctly on the production line or may have been knocked out of position during shipping. Also, make sure there is no air stone near the intake tube, and that the filter is plugged into a power strip with surge protection. If you are unable to resolve the issue, please call us at 1-800-322-1266. BREX
Answered by: BREX
Date published: 2017-02-21

Hi I just bought biowheel penguin 150 and everything is working fine except the biowheel is not turning at all. The water doesn't seem to be hitting it at all. What can I do to get the water to hit the wheel to start it turning?

Asked by: 20Gallonfishlove
Make sure the water level in the tank is all the way to the top of the tank for one thing. This is the most likely culprit in a new filter system. BREX
Answered by: BREX
Date published: 2017-02-21

I have 29 gallon marineland tank with 5 rather large goldfish in it.. It came with bio-wheel 150 but it seems with goldfish level of waste it is not enough( getting plugged almost every other day). I am thinking about upgrading filter. Is 350 too big?

Asked by: Olga G
No, if the goldfish are good size, they will not be bothered by this filter at all. The additional filtration would be good to have, but make sure you run the old filter for a week or so as well, until the new one has built up its own bacterial base. Or you can put your old media into the new filter system. BREX
Answered by: BREX
Date published: 2017-03-10

I have the Marineland Bio Wheel Penguin 200 bout it maybe 2 months ago. Wheel stops spinning, water overflows the intake chute. Like the cartidge is stopping the water from flowing. Have taken it all apart and rinsed and cleaned any buildup.

Asked by: Eliza87
Take it apart again, this time place the impeller into a dish of distilled white vinegar and let it soak for about 15 minutes. Take a paper towel and soak a corner in the vinegar, as well, then twist it and pack it into the motor at the bottom of the filter box. Let it sit for a few minutes, then twist it around to clean out the motor. You may also want to use a small baby bottle brush to clean out the intake tube and the impeller housing. There is some debris somewhere, interfering with the filter. BREX
Answered by: BREX
Date published: 2017-02-17

I have a penguin bio-wheel 200 and the wheel is still spinning but the water is not getting clean, what should i put inside the filter?

Asked by: AwesomeRazor
There are a lot of possible reasons why your tank may not appear clean. It would help to know more about the tank such as how long it has been set up, what kind and quantity of fish, your routine for partial water changes, etc. We would actually recommend a partial water change, addition of Tetra SafeStart Plus, and either a second filter cartridge or adding some additional carbon, ammo chips, floss or bio beads. Test your water quality parameters as well to help determine the issue so you can make an educated guess as to what type of media you need to add more of to the tank. BREX
Answered by: BREX
Date published: 2017-02-17

My filter is brand new , plugged it in and nothing is happening 

Asked by: Ivy1
Pull out the intake tube, impeller housing, and impeller, check them for any damage, then re-seat them. The impeller may be jammed or not seated properly. If the unit still makes no noise, contact us at 1-800-322-1266. BREX
Answered by: BREX
Date published: 2017-02-14

I have a 350 that I bought at least 20 years ago still rocking and rolling. My question is do y'all have reusable cartridges like the company that walmart sells? All i can ever remember seeing are the completely sealed filters.

Asked by: Insaneinnixa
We still have the sealed cartridges, but you can buy media containers for this filter and fill them with whatever type of media you want/need for your tank. Here is a link to a site that carries them. Scroll to the bottom of the list on this page: https://www.petsolutions.com/C/Aquarium-Filter-Cartridges/I/Marineland-Penguin-Filter-Cartridges.aspx?catargetid=520009670000581070&cadevice=c&gclid=Cj0KEQiAw_DEBRChnYiQ_562gsEBEiQA4Lcssvt8NS7mqCrwDs76gaN0PZjLM03QkLXxnQOmy7YseGYaAhpB8P8HAQ. BREX
Answered by: BREX
Date published: 2017-02-21

my 10 Gallon bio wheel filter isn't working. I've tried priming, un plugging it and plugin it back it...... could there be a loose part I should be concerned about?.....or anything else I could do?

Asked by: CFred44
A very dirty filter cartridge can slow the water flow and stop the bio-wheel from spinning. Try replacing the cartridge.
Answered by: SailorVF21
Date published: 2017-02-09

Hi I has a penguin 200 with my 29 gallon tank and the bio wheel has stopped turning and the water started to over flow over the intake tube I put two new filters in on 01/22 and my tank is clear and clean so I think its to soon to need new filters ?

Asked by: Coco
Hi Coco, How often you need to change filter cartridges depends on the size tank, number of fish, types of fish, and feeding routine. Typically, they need changing every two to four weeks. You may also need to clean out the intake tube, impeller, and well down inside the filter box. These areas can build up sludge, algae, and other deposits. Take the filter apart, and clean each piece separately. BREX
Answered by: BREX
Date published: 2017-02-06

Is there any Carbon in the actual bio-wheel? I know the filter inserts have carbon, and I'm not using them intentionally. But something is removing the medication from my quarantine tank and I suspect carbon in the bio wheel.

Asked by: maggarcj
No, there is absolutely NO carbon in the bio wheel. BREX
Answered by: BREX
Date published: 2017-02-02

I have an older bow front, believe 10 or 20 gallon, aquarium that needs a bio wheel, about 2.5 inches in length.  Can you tell me which one I can get.  

Asked by: Susan41
We do not have any that are 2.5" in length. Look on the top of the Penguin filter to see which model filter you own. This will tell you what bio wheel you need as well. The model number is molded into the cover, in one of the corners, depending on the model and the age of the filter. BREX
Answered by: BREX
Date published: 2017-02-01
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