If you think back to the nitrogen cycle, you will remember just how important nitrifying bacteria are.
This beneficial bacteria removes ammonia and nitrites (harmful chemicals) from your aquarium. These chemicals naturally build up inside your aquarium, and if the bacteria in your tank don’t remove them, then your fish will eventually die. As you see, these beneficial bacteria are pretty important.
Well, these bacteria need a place to live. Ceramic rings offer the perfect home for the beneficial bacteria in your aquarium.
You see, beneficial bacteria need a surface to cling to. The more surface that is available, the more bacteria that your filter media can hold.
Ceramic rings increase their surface area through tiny little pores. These pores are so small that you can hardly see them without a microscope.
good product but lots of ring was broken due to improper packing & net was lots of whole. But product was good & cheap price