[ArchiReef]

I have heard mixed thoughts on biowheel filters. I was originally told to get one (I did) and I have seen them on a lot of SW tanks. Some people told me its fine to use them but to get rid of the biowheels where as I have seen a lot of SW tanks with the biowheels still on the filter. Why would you removed the biowheel, nitrates? I have a 20 gallon high. Also should I clean the biowheels? I have been told not to.


thanks