AquaTop Replacement Blue Filter Sponge for CF-400UV
Genuine AQUATOP replacement filter sponge designed for use in the CF-400UV canister filter. This mechanical filter media effectively removes organic particles, foreign debris, and excess food from aquarium water. Suitable for both freshwater and saltwater systems.
Pre-cut to fit the CF-400UV filter model for a secure and proper fit.
| Specification | Detail |
|---|---|
| Filter Type | Blue Mechanical Sponge |
| Compatibility | Aquatop CF-400UV |
| Application | Freshwater and Saltwater Aquariums |
| Quantity per Pack | 1 piece |
FAQ
Is this sponge compatible with the CF-400UV filter only?
Yes, this blue filter sponge is specifically designed to fit the Aquatop CF-400UV canister filter and is pre-cut for optimal compatibility.
Can this sponge be used in both freshwater and saltwater tanks?
Yes, the sponge is suitable for both freshwater and saltwater aquarium filtration systems.
How often should the sponge be cleaned or replaced?
Please contact customer service for cleaning and replacement frequency guidance.

Joanne Davies –
The sponge fits perfectly in my CF-400UV filter. It’s easy to clean and keeps the water clear without clogging. Works well in my saltwater tank after a few weeks of use.
Fiona Nash –
Good quality and fits without any issues. I noticed less debris in the tank after installing it. It’s a simple replacement and works as expected.
Stewart Sharp –
I’ve used this sponge for two months now and it still performs well. The filter runs smoothly and the water clarity has improved noticeably.