Where to put Ceramic Rings in Filter

Where to put ceramic rings in filter

Where to put ceramic rings in filter is very important to get the most out of your bio-media. Ceramic rings are biological media that provides a very large surface area for beneficial bacteria to grow and live. This bacteria on your ceramic rings is required to complete the Nitrogen Cycle in your tank, which converts harmful ammonia and nitrite in to the less harmful nitrate.

Ceramic rings, and any other form of biological media, always go after the mechanical filtration (sponges) and before the chemical filtration (carbon). In a canister, place your ceramic rings in the tray between your sponges and chemical media.


Why do ceramic rings go in this order?

The order of filtration in any type of filter is always the same. Mechanical first, then Biological and finally Chemical. Water must be mechanically filtered first in order to remove the particles of fish waste, uneaten food, dirt, and debris from the water.

This will ensure that the the surface of your ceramic rings does not get “clogged” with any detritus. Beneficial bacteria use the surface area of your ceramic rings to grow and live. You always want the cleanest water, free from detritus, to reach your bio-media (ceramic rings).

The bacteria that grow on your ceramic rings helps to convert deadly ammonia and nitrite into the less toxic form of nitrate. Nitrates are removed from your tank by scheduled water changes performed by you, the fish keeper.

Nitrates can also be removed by adding plants in your aquarium. Plants consume the nitrate helping to complete the full nitrogen cycle.

Can ceramic rings go inside your tank?

Ceramic Rings In Aquarium - Placement in 3 Different Filters (And All Your Other Media) video

Yes, Ceramic rings can be placed in a bag and placed in your tank and beneficial bacteria will also grow on the surface area of the rings. This method is used when there isn’t enough space inside your filter for all the Ceramic rings desired.

Another good reason for this method is to create seeded bio-media (bio-media that has bacteria living on it) that can later be moved into another tank or filter for a quick cycling of that tank.

With that being said, It is optimal to place your bio-media inside the filter as the filter provides an oxygenated flow of water over your ceramic rings and beneficial bacteria will flourish and multiply easier and faster.

Are my ceramic rings working?

Ceramic rings, as well as all other types of media, are designed to allow for the growth of beneficial bacteria. This bacteria will consume and convert the harmful byproducts in your tank that come from fish waste, uneaten food and other decaying organic matter.

You can be assured that your ceramic rings are working when your tank completes the nitrogen cycle. Completing the cycle would mean there is enough beneficial bacteria in your tank to efficiently remove ammonia and nitrite and convert it into the less harmful nitrate.

Testing your water frequently with API’s Master Test Kit for ammonia, nitrite and nitrate will help you determine when this nitrogen cycle has completed.

Watch how to use the API Master test Kit for a great instructional video.


Where to put ceramic rings in filter – HOB

A Hang on Back Filter (or HOB) does not have as much media capacity as a canister filter would. But your ceramic rings will still be placed in the same order. Depending on what type of HOB you have your media will go from back to front, or from bottom to top. With mechanical being first, then your ceramic rings and finally chemical media.

Here is a helpful article with more details on using an HOB Filter.


Alternatives to Ceramic Rings

Seachem Matrix

Seachem Matrix


Matrix is a highly porous media designed to provide exceptionally efficient bio filtration for single site removal of ammonia, nitrite, and nitrate from freshwater, marine, and reef aquaria.

Each liter of matrix provides over 160,000 cm2 (170 sq. Ft.) of surface, equivalent to over 40 L (10 gallons) of typical plastic ball media.





Fluval BioMax

Fluval Biomax



Fluval BioMax bio rings have a complex pore system creating an optimal environment where beneficial bacteria can thrive.

BIOMAX bio rings have more capacity than most biological filter media and allow ideal water movement throughout the media to ensure optimal contact time for efficient biological filtration for freshwater and marine environments.





Bio-Home Ultimate

bio-home ulitmate


Bio-home Aquarium filter media offers the best possible environment for bacterial colonization and is capable of supporting aerobic and anaerobic bacteria in a wide variety of filters and varied flow rates.

Being capable of supporting the aerobic and anaerobic bacteria, it ensures that natural processing of ammonia, nitrite, and nitrate can be achieved.



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If you’d like to learn how easy it is to keep your own African Cichlids check out my Free Webinar Training Here or watch a short intro video below.


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About Me

“I don’t want my fish to survive, I want them to THRIVE!”

I’ve had a passion for aquariums ever since my first Goldfish in a bowl! Through years of experience I’ve learned how to care and provide for my fish, spoiling them along the way! The joy of this hobby comes from knowing my fish are happy and healthy, growing and thriving. 

I’ve also learned that I have the ability to help others with their tanks and fish…and I’m happy to help! Welcome to the Site, hopefully you’ll find a topic that can guide you in your fish keeping journey. Thanks for visiting!

KaveMan Aquatics

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