Fluval Replacement Diffuser Part for BIO-CO2 Pro 250L Aquarium Diffuser
Routine disc replacement is common in a CO2 system and should be done every few months to maintain optimal carbon dioxide delivery. The Fluval CO2 Diffuser (250 L size) features a high-quality ceramic disc that produces a fine mist of CO2 bubbles, ensuring efficient dissolution of CO2 into the aquarium for healthy plant growth.
Product Specifications
| Component | Replacement Ceramic Disc |
|---|---|
| Compatible Model | BIO-CO2 Pro 250L |
| Function | Produces fine CO2 bubble mist for efficient gas dissolution |
| Material | Ceramic |
FAQ
How often should I replace the diffuser disc?
The disc should be replaced every few months depending on usage and water conditions to maintain optimal CO2 delivery.
Is this part compatible with other Fluval CO2 systems?
This part is specifically designed for the BIO-CO2 Pro 250L model and may not be compatible with other models.
Can I use this disc with a different aquarium size?
Please contact customer service for compatibility with non-250L systems.

Faith Chapman –
Replaced the disc after six months of use and noticed a more consistent CO2 bubble output. The ceramic material feels durable and the mist is fine and even, which helps with plant growth in my planted tank.
Lily Davies –
Works well with my existing BIO-CO2 Pro 250L setup. The replacement was easy and the bubbles are evenly distributed, which improves CO2 absorption in the water.
John Rees –
After installing the new disc, my aquarium plants show better color and growth. The fine mist helps dissolve CO2 efficiently without creating large bubbles.