Choosing a Submersible Pond Pump: 700–1000 GPH

Safety First

If the pond is accessible to people (no fence), do not use a submersible pump. Risk of electric shock if seal fails. Use an external pump instead.

Top Brands for Reliability

• Grundfos (best overall, if available).
• Hayward, Jandy, Pentair (pool/spa industry leaders, very durable).

Sizing Guidelines

• Turnover: 1× pond volume per hour (e.g., 1000 GPH for 1000-gal pond).
• Head height: Measure vertical lift from pump to highest outlet (waterfall, filter). Add 1 ft per 10 ft tubing + fittings.
• Select pump that delivers required GPH at your total dynamic head.

Features to Look For

• Thermal overload protection.
• Ceramic shaft (corrosion resistant).
• Vortex impeller (handles solids).
• Energy-efficient motor (ECM).

Installation Tip

Place pump on a flat brick or platform, not directly on liner. Use a check valve on discharge to prevent back-drainage.