A modular internal filter that scales with your tank saves you from buying a whole new unit every time your bioload grows. The Sicce Shark PRO NANO brings that modular, magnetic-mount design down to nano and pico scale, in two sizes with expansion capability.
Why a Modular Nano Filter
Bioload doesn't stay static — a nano tank that starts light often gets more heavily stocked over time. A modular filter lets you add capacity by adding a module rather than replacing the entire unit when your filtration needs grow.
Choosing a Size
- SHARK PRO NANO 250 — a compact internal filter sized for nano and pico tanks, built with the same modular, magnetic-mount design as the full-size Shark PRO line.
- SHARK PRO NANO 320 — steps up flow from the 250 in the same compact, magnetic-mount format, for slightly larger nano tanks.
Expanding and Maintaining It
- Shark PRO NANO Additional Module with Sponge — adds extra filtration capacity for nano tanks with a heavier bioload, without replacing the base unit.
- Shark PRO NANO Replacement Sponges — a direct replacement sponge set, restoring mechanical filtration once the originals clog.
The Sicce Shark PRO NANO line is available at Marine Concept Supply — order online or pick up at our shop in Wheeling, IL. Shop the 250, 320, the Additional Module, or Replacement Sponges, and browse more aquarium filtration.

