Llama

Have bioballs and the ceramic tubes. How often am I supposed to change them? How often do you recommend I change them? Is there any way to notice that filtration is less efficient? (I dunno)

aquarist48

Hello Llama. I have the blue biological balls in my wet/dry filter along with the ceramic tubes. I've never cleaned them in 8 years. If you see that they are really nasty you may want to rinse them in a bucket of siphoned tank water, don't scrub them at all. Never use tap water on them or you'll lose your cycle and have to start over.
You should NEVER have to change them.