Changing a bio-wheel

[Marinemom]

Don't change the bio-wheel unless it is damaged in some way and will not turn or spin. The bio-wheel is where all the good bacteria is that supports the life in your aquarium.

Marinemom

 

[BucJason]

It shouldn't get very dirty if you are doing regular filter maintenance....The bio-wheel is usually directly behind the filter media, so only freshly filtered water is running over it.

 

[snickle]

They can get dirty if you have a quick algae blom that clogs the filter, the overflow keeps the unit from overflowing, but the bio-wheel gets dirty.

Again, this can be poor maintenance, as it was in my case.

It shouldn't get very dirty if you are doing regular filter maintenance....The bio-wheel is usually directly behind the filter media, so only freshly filtered water is running over it.