Cobalt Duo UV 500 Filter Sponges – 2 Pack
Replacement filter pads for the Cobalt Duo UV 500 aquarium filter system. Designed to maintain optimal water flow and filtration efficiency.
| Specification | Details |
|---|---|
| Product Type | Filter Pads |
| System Compatibility | Cobalt Duo UV 500 |
| Item Number | ACI52012 |
| Quantity | 2 Pads |
FAQ
Are these sponges compatible with other Cobalt UV models?
These sponges are specifically designed for the Cobalt Duo UV 500 model. Compatibility with other models is not guaranteed.
How often should I replace the filter sponges?
Replace the sponges every 3 to 4 months, or as recommended by your filter manufacturer, depending on tank conditions and usage.
Do these sponges come with installation instructions?
Please contact customer service for installation guidance.

Austin Bond –
The sponges fit perfectly in my Duo UV 500 filter. They maintain good water flow and help keep the tank clean without clogging. Easy to install and have lasted longer than the previous ones.
Sally Wilson –
Works well with my aquarium setup. The filter runs smoothly and the water clarity has improved. I noticed no leaks after installation.
Caroline Henderson –
Replaced the old sponges with these and the filtration performance is noticeably better. No issues with durability or fit. Will buy again for future replacements.