ASF MX Pro Pump — 350 GPH Compact Submersible Utility/Return Pump

Overview

The ASF MX Pro 350 GPH is a compact, quiet submersible pump built for continuous operation in reef, freshwater, and planted tanks. It’s ideal as a return for nano/midsize systems, or as a dedicated feed for media reactors, UV units, and frag tanks—where smooth, controllable flow and reliability matter.

Key Features

• Up to 350 GPH max flow (actual flow depends on head height and plumbing)

• Adjustable output with front-mounted flow dial for fine tuning

• Quiet, energy-efficient motor designed for 24/7 duty

• Submersible use; saltwater & freshwater safe

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

• Barbed outlet for easy tubing connection

Use Cases

• Return pump for nano to midsize AIO/sump systems

• Carbon/GFO/biopellet/UV reactor feed

• Utility circulation for frag/QT tanks and mixing stations

• Fountains and water features

Installation & Maintenance

1. Rinse pump and fittings before first use.

2. Place fully submerged in sump or display; ensure adequate water level at all times.

3. Connect tubing to the barbed outlet; secure with a clamp if needed.

4. Set desired flow using the adjustment dial; verify water level stability.

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

Product Specifications

• Model: ASF MX Pro Pump – 350 GPH

• Max Flow: ~350 gallons per hour

• Placement: Submersible only

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

• Water Type: Marine & freshwater safe

• Duty Cycle: Continuous 24/7 operation

What’s in the Box

• ASF MX Pro 350 GPH submersible pump

• Barbed outlet fitting(s)

• Suction-cup base

• Quick-start guide

Sizing tip: Plumbing losses (vertical lift, elbows, valves, small-ID tubing) reduce real-world flow. If you need a specific turnover rate, choose a pump with headroom and throttle down using the built-in control or a valve.