ASF MX Pump — 260 GPH Compact Submersible Utility/Return Pump

Overview

The ASF MX 260 GPH is a compact, quiet submersible pump designed for continuous duty in reef, freshwater, and planted aquariums. It’s a great fit for nano to midsize tanks as a return pump, and it excels as a dedicated feed for media reactors, UV units, and frag systems—where smooth, reliable flow matters.

Key Features

• Up to 260 GPH max flow (actual flow varies with head height and plumbing)

• Front-mounted flow dial for simple, precise adjustment

• Quiet, energy-efficient motor rated for 24/7 operation

• Submersible use; safe for saltwater and freshwater

• Vibration-damping suction feet for stable, low-noise mounting

• Barbed outlet for easy connection to flexible tubing

Use Cases

• Return pump for nano/midsize AIO or sump setups

• Feed for carbon/GFO/biopellet/UV reactors

• Circulation for frag tanks and quarantine systems

• Small fountains and water features

Installation & Maintenance

1. Rinse pump and fittings before first use.

2. Place fully submerged in sump or display; maintain adequate water level.

3. Attach tubing to the barbed outlet and secure with a clamp if needed.

4. Set desired flow using the adjustment dial; verify stable water level in the return chamber.

5. Monthly (or as needed): Unplug, remove front cover, pull the impeller, and rinse the impeller/cavity to clear film and debris.

Product Specifications

• Model: ASF MX Pump – 260 GPH

• Max Flow: ~260 gallons per hour

• Placement: Submersible only

• Outlet: Barbed fitting (compatible with common aquarium tubing)

• Water Type: Marine & freshwater safe

• Duty Cycle: Continuous operation

What’s in the Box

• ASF MX 260 GPH submersible pump

• Barbed outlet fitting(s)

• Suction-cup base

• Quick-start guide

Sizing tip: Vertical lift, elbows, valves, and narrow tubing reduce real-world flow. If you’re targeting a specific turnover rate, choose a pump with headroom and throttle down using the built-in control or a valve.