Fluval U1 Underwater Aquarium Filter – Up to 15 Gallons

The compact Fluval U1 can provide primary filtration in small tanks or supplemental filtration in larger freshwater or saltwater systems.

Key Features

• Up to 250 L/h flow
• Flip-top media access
• Adjustable water-control panel
• Horizontal or vertical installation
• 4.5W underwater design

Axolotl setup note: For permanent adult axolotl housing, use an appropriately sized aquarium—commonly 20 gallons or larger—and include this unit only where its capacity and flow fit the full filtration plan.