Aquascape® External Pond Pumps

Name: Aquascape® External Pond Pumps
Brand: Aquascape
SKU: PP45050
Availability: InStock

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PRO PRICING AVAILABLE – Ask our team about bulk and contractor discounts.

When your water feature demands massive flow, reliability, and professional-grade engineering — the Aquascape external pumps series are your workhorse. Designed for high-volume installations, these oil-free, low-RPM motor pumps deliver up to ~18,400GPH for demanding waterfalls, streams, or large ponds.

Built to last with completely sealed, fan-cooled motors (TEFC), they are ideal for continuous use and rugged conditions. Whether you’re a landscape pro building large commercial features or a serious residential install, these pumps offer performance you can depend on.

Product Details & Specs

Product Type: External (non-submersible) high-flow pond/waterfall pump

Maximum Flow Rate: Up to ~18,400 GPH

Maximum Head Height: Up to ~45 ft (varies by variant)

Motor Type: Oil-free, low-RPM, TEFC fan-cooled

Inlet / Discharge: 3″ inlet (flanged) / 2″ discharge (flanged) typical for 18000 variant

Power / Phase Options: Single or 3-phase variants (18000-3P for 3-phase motor)

Suitable Use: Large ponds, massive waterfalls, commercial installations

Brand: Aquascape

Availability: Salt Lake City, Heber, Sunset, Vancouver, Oakley (confirm local yard)

Shipping & Availability

In stock or special-order at all American Stone yards.
Shipping available nationwide.
Local pickup from Salt Lake City, Heber, Sunset, or Vancouver.

FAQs

Q: Is this pump suitable for commercial-scale waterfalls?
A: Yes – the EXT 18000 delivers very high flow and professional features (oil-free motor, large flanged connections) for large installations.

Q: Does it support 3-phase power?
A: Yes – the “-3P” variant is designed for 3-phase systems, ideal for more efficient commercial power use.

Q: Can I bury this pump in a vault?
A: Yes – with proper installation in a pump vault or external chamber, it’s ideal for hidden setups in large builds.

Q: What maintenance is required?
A: With its oil-free sealed motor, maintenance is reduced compared to standard submersibles. Keep the inlet clear, monitor performance, and follow manufacturer guidelines.

Need Help Picking the Right Setup? We’ve Got You.

Every water feature is unique, and we know the parts list can get confusing fast. We offer the entire Aquascape lineup, and our team can help you match the right pumps, liners, and basins to your project – saving you time, hassle, and often, money compared to pre-packed kits.

Give us a call or stop by – we’ll walk through your setup together and make sure you have everything you need for a pond or waterfall you’ll be proud of.

Speak with an American Stone Team Member

Pro Tips from American Stone

Calculate total dynamic head (vertical lift + plumbing resistance) before sizing pump – high-flow units like this must be matched carefully.
Use heavy-duty PVC or metal flanged plumbing rated for high flow to match the pump’s capacity – under-sized piping will kill performance.
Install the pump in a clean, ventilated external vault, not buried in mud, to maintain efficiency and longevity.
Use a variable frequency drive (VFD) with the 3-phase variant (-3P) to fine-tune flow, reduce energy costs, and extend asset life.
Monitor inlet screens and ensure debris cannot reach the impeller – with high flows, even small clogging will show up quickly.

Aquascape® External Pond Pumps

READY TO GET STARTED? >>>

Need Help Picking the Right Setup? We’ve Got You.

Pro Tips from American Stone

Flexible Financing

Professional Pricing

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