Sequence Series 1000 Pump - Model 4500SEQ21

A dependable, energy-efficient external pond pump from Sequence’s versatile 1000 series. It offers a great combination of higher flow and solid pressure, making it an outstanding choice for medium to larger ponds and water features.

Delivering up to 4,500 GPH, this pump is ideal for ponds approximately 4,000–6,000 gallons (or systems needing strong circulation and moderate head pressure). It’s perfect for powering waterfalls, supporting biological filters, and maintaining excellent water quality.

Key Specifications:

• Max Flow Rate: 4,500 GPH
• Max Head Pressure: 21 feet
• Power: 115V, efficient operation, TEFC motor for quiet and durable performance
• Inlet/Outlet: Typically 1.5" or 2" FPT (standard for the series)
• Cord: 8-foot power cord with molded 115V plug

Approximate Flow Rates at Different Heads:

• 0' head: 4,500 GPH
• 4' head: Strong mid-4,000s GPH
• 8' head: ~3,800+ GPH (estimated based on series curve)
• 12'–15' head: Excellent sustained performance
• Up to 21' max head

Recommended Applications

Well-suited for ponds with elevated features, longer plumbing runs, or additional equipment like UV sterilizers and external filters. The 1000 series provides reliable turnover rates while keeping energy consumption low.

Built in the USA with Sequence’s signature quality, the TEFC motor ensures long life and quiet operation in outdoor environments.

Features & Benefits:

• Excellent blend of flow and pressure for most residential and light commercial ponds
• Energy efficient with low operating costs
• Quiet, robust TEFC motor construction
• Easy plumbing and low maintenance
  

This model bridges the gap between the lower-flow 3300SEQ21 and higher-capacity options in the 1000 series, giving you more flexibility when selecting the right pump.