Cobalt EXT Canister Filter – Up to 55 Gallons
The Cobalt Aquatics E-X-T canister filter is designed for innovative and flexible aquarium setups. Its inline pump allows continuous circulation even when the canister is disconnected for maintenance, thanks to the unique valve with 5/8 hose barbs.
Maintenance is simplified with easy-open and close clips and removable media trays. The filter includes four pre-loaded media chambers: a first stage sponge filter, second stage activated carbon, third stage ceramic rings, and a fourth stage finishing floss.
| Specification | Detail |
|---|---|
| Max Flow Rate | 210 gph |
| Compatible Tank Size | Up to 55 gallons |
| Media Stages | 1. Sponge filter 2. Activated carbon 3. Ceramic rings 4. Finishing floss |
| Warranty | 3 years |
FAQ
Can the pump continue to run when the canister is disconnected?
Yes, the inline pump with the 5/8 hose barb valve allows continuous circulation even when the canister is disconnected for maintenance.
How easy is it to clean or replace the media?
The media trays are removable and feature easy-open and close clips, making maintenance simple and quick.
What is the maximum flow rate of the filter?
The maximum flow rate is 210 gallons per hour.

Keith Skinner –
This filter has been running smoothly in my 55-gallon tank for over six months. The circulation is excellent, and I appreciate that I can disconnect it for cleaning without losing water flow. The media changes are simple and the filter stays quiet during operation.
Vanessa Ellison –
I installed this filter after switching from a sponge filter. The multi-stage media helps with water clarity and odor control. It’s a bit bulky, but the performance is worth it for a larger tank.
Yvonne Burgess –
The inline pump design is a game-changer. I can maintain the filter while still keeping the tank well-circulated. The ceramic and carbon stages work well together for water quality.