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.) 

I had a tank with a really bad ich infestation, will they linger in the biowheel?

Asked by: C_willie
No. If you just finished dosing though, it is a good idea to come back 7 days later and do one dose to make sure you killed all of the larvae. BREX
Answered by: BREX
Date published: 2017-08-17

How do I order the bio-wheel assembly. part PRBW150B AND PRBW2350B

Asked by: wwtwo523
Thanks for asking, wwtwo523. You can order those directly from our website! Just type the item numbers in the search bar, add to your cart, and check out.
Answered by: Customer Service
Date published: 2017-08-08

I just got the biowheel 100 yesterday. Today I noticed it had too much suction. I adjusted the light gray piece on the filter. SNAP. Then... for an hour I tried to get the filter to work. The biowheel doesn't spin now. What is the problem?!

Asked by: Feisty_Unicorn
Well, first, there is no such thing as too much suction. When you closed the lever, you either slowed it down so much it can't pull enough water to turn the bio wheel correctly or you moved the intake tube slightly out of position so it is not operating properly now. Pull the intake tube, impeller housing, and impeller out of the filter box and inspect them. Re-insert them, and make sure the water in the tank is to the top. Call us if you are unable to resolve. 1-800-322-1266. BREX
Answered by: BREX
Date published: 2017-08-01

Can I change a Bio wheel 350 from a saltwater filter after being stored for years to a freshwater filter?

Asked by: kidfish
You should be able to by cleaning the parts with white vinegar and rinsing them well. You may need to replace the bio wheels. BREX
Answered by: BREX
Date published: 2017-07-28

I am selling my current tank and including the Marineland filter with it. The tank may be in storage for a while. Can the bio-wheel on the filter be stored, or should I just throw it away?

Asked by: SlyLilHuntress
It can be stored, yes. BREX
Answered by: BREX
Date published: 2017-07-27

I am upgrading my filter to a marineland emperor 400. Since I will now have two brand new bio wheels how can I expect that to effect my tank? Will there be adverse effects to having new bio wheels over my seasoned one?

Asked by: Angela71
Hi Angela71. To help prevent displacing your beneficial bacteria I suggest running the two filters at the same time or floating the seasoned bio-wheels in the water while the new filter runs. Either option should give the new filter a chance to season.
Answered by: Customer Service
Date published: 2017-07-28

I have Penguin 150 - I recently start to hear the motor noise was getting a bit loud. The filter seems to be working fine. I cleaned all the parts and the air stones are far from intake tubes. It is common to have some bit noise from the filter/motor?

Asked by: Question Lady
Noise occurs for a number of reasons. If this filter is a few years old, the impeller could be wearing out. If you only used water to clean it, try soaking the impeller in distilled white vinegar to remove deposits water cannot remove. Also, take a q tip and vinegar and swab the motor out thoroughly. Make sure there is no sand in the motor or up under the magnet. BREX
Answered by: BREX
Date published: 2017-07-18

My bio wheel still isn't turning . I took the impeller out and cleaned everything  The tank is full as well. It only worked for maybe 2 hours and I've had it for 2 weeks now.

Asked by: Rosario
We're sorry to hear the suggested troubleshooting hasn't helped, Rosario. Please give us a call at 1-800-526-0650 for more help.
Answered by: Customer Service
Date published: 2017-07-13
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