Learn how to arrange aquarium filter media by water flow, when to use carbon, and how to clean media without replacing everything at once.
Trace the direction of water flow
Check your filter manual or trace the path from intake to return. Tray order varies by model. Put debris-catching mechanical media where the manufacturer recommends so it can be reached and cleaned easily.
Give each type of media a job
Coarse sponge catches larger debris. Finer pads catch smaller particles but may clog faster. Biological media provides surface area for bacteria that process waste. Activated carbon is optional in many setups and should be used for a defined purpose according to the product and filter instructions.
Use media bags without blocking the flow
Choose a bag with mesh small enough to contain the media and large enough to let water pass. Leave room around the bag and avoid compressing a tray. Follow the equipment manual for unplugging, servicing and restarting the filter.
Clean in stages
Avoid replacing all established biological media at once. When it needs cleaning, gently swish it in removed tank water. After service, check the return flow, connections and water parameters. If the flow slows again quickly, check for clogged pads, trapped air or an obstructed intake.
Explore Orrivion’s aquarium zipper filter media bags.