I have been using an FX4 filter unit for about three years. I have read Bio rings go bad in time. I like to hear from aquarium experienced hobbyists,
How often do you change your bio rings and how not to destroy the water cycle?
I really don't know the difference between Bio rings and have seen different shapes and colors.
or
Don't change them at all.
How often do you change your bio rings and how not to destroy the water cycle?
I really don't know the difference between Bio rings and have seen different shapes and colors.
or
Don't change them at all.