Spillways & Diffusers Spillways & Diffusers When a fall of water is desired and filtration is not needed. They diffuse incoming water flow to create the beginnings of streams and waterfalls.
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Spillways & Diffusers

AquascapePRO Waterfall Spillway

The Aquascape Waterfall Spillway is a cost-effective way to create the starting point on any waterfall or stream, providing a smooth consistent water flow. The spillway is a versatile tool that can be used in a wide variety of water feature applications. As the incoming water rushes in, the water is diffused by strategically positioned internal barriers, creating smooth flow of water.  Ideal solution for pondless disappearing waterfall systems where large and expensive biological filters are not necessary. It can also be installed as an additional waterfall or stream onto a new or existing pond. Its durable design allows boulders, gravel, soil or other creative landscape material to be set directly on top, making it easy to camouflage into the surrounding landscape. 


  • Creates a smooth and consistent water flow for waterfalls
  • Low profile and durable design
  • Handles the weight of stone boulders for concealment
  • Includes 2" PVC slip and barbed fitting

AquascapePRO Waterfall Spillway

Item Icons Spillway Width Dimensions Max Flow Fittings Included Add
10.5"L x 13.5"W x 5"H
4,000 GPH
2" PVC slip and 1.5" barb
Out of Stock
17.5"L x 24"W x 5"H
7,500 GPH
2" PVC slip, 1.5" barb
EasyPro Eco-Series Waterfall Diffusers

Faster to install and Tougher spillway than any other spillway on the market

  • Ideal for use at beginning of streams and in block walls, pools and formal fountains
  • Low profile design of only 3-1/2"
  • Extra strong vertical rib design creates a nearly indestructible diffuser
  • Dual 2" inlets

EasyPro Eco-Series Waterfall Diffusers

Item Icons Description Size Flow (GPH) Inlet Add
Easy Pro Eco-Series 16" Waterfall Diffuser (MPN UWD16)
$109.99 $98.99 | 247 Points
FREE $10.00 Free Gift Certificate Code
16" Waterfall Diffuser
16" x 14" x 3-1/2"
1,000 - 4,000
Dual 2" FPT Inlets
EasyPro Eco-Series 23" Waterfall Diffuser (MPN UWD23)
$147.99 $133.19 | 333 Points
FREE $15.00 Free Gift Certificate Code
23" Waterfall Diffuser
23" x 14" x 3-1/2"
1,500 - 6,000
Two 2" FPT spinweld
EasyPro Eco-Series 32" Waterfall Diffuser (MPN UWD32)
$219.99 $197.99 | 495 Points
FREE $15.00 Free Gift Certificate Code
32" Waterfall Diffuser
32" x 14" x 3 1/2"
2000 - 8000 gph
Dual 2" FPT Inlets
EasyPro Eco-Series Dual 46" Waterfall Diffusers (MPN UWD46)
$295.99 $266.39 | 666 Points
FREE $15.00 Free Gift Certificate Code
Dual 46" Waterfall Diffusers
46" x 14" x 3-1/2"
3,000 - 12,000
Dual 2″ inlets
Atlantic FastFalls - Waterfall Diffuser
fastfalls big bahama pro atlantic free Gift Certificate

Incredibly strong one-piece units feature an internal baffling system, support cones and re-enforced spillway. The innovative "inside the liner" design and rear liner attachment simplifies installation. Cover with rock, gravel, soil or mulch to blend with your surrounding landscape.

All models feature:
  • Spillway boxes diffuse incoming water flow to create starting points to streams and waterfalls
  • Designed to make plumbing the top of the waterfall as easy as possible
  • Innovative rear liner attachment simplifies installation and eliminates leakage due to settling
  • Crush-proof design with internal baffles stabilized by support cones carries the weight of stone
  • Reinforced spillway lip retains rock, gravel, mulch or soil
  • Includes installation kit, male thread adapter and one-piece liner flange

Atlantic FastFalls - Waterfall Diffuser

Item Icons Weir Size Max Pump Flow Dimensions Connection Add
3,000 GPH
16.5"W x 9.5"D x 7.25"H
1.5" FPT
4,000 GPH
20.5"W x 17"D x 10.25"H
6,000 GPH
27.5"W x 17"D x 10.25"H
2" FPT
9,000 GPH
39.5"W x 17"D x 10.25"H
3" FPT
Waterscapes by Atlantic FastFalls - Waterfall Spillways

Easily add a waterfall or stream to a new or existing water feature. Because of their rugged design and HMWPE construction, Fastfalls also comes with Atlantic's exclusive lifetime warranty.

Each FastFalls includes bulkhead, liner attachment flange, splash reduction foam and top grate.

Waterscapes by Atlantic FastFalls - Waterfall Spillways

Item Weir Size Pump Rate Dimensions Connection Add
2,000 GPH
16" x 11" x 8"
1 1/2" FPT
4,000 GPH
27" x 11" x 8"
2" FPT
6,000 GPH
38" x 13" x 9"
2" FPT
Savio Waterfall Weir

Creates 16" Wide Waterfall

Dress up your waterfall return with this easy, eye-pleasing Waterfall Weir.

Enjoy hours of relaxation as your pond recreates the beauty of nature.

  • No glue liner connection - all compression seal securely holds liner in place without adhesives.
  • Easily connect 2" flexible or rigid PVC tubing to the rear inlet (not shown). Adapts to other types and sizes of tubing with fittings sold separately.
  • Bio-mechanical filtration.
  • Super strong injection molded housing.
  • Use multiple units for a wider waterfall.
  • Rated for pump flow rates of 900-3000 gph

Savio Waterfall Weir

Item Icons Inlet Add
Savio Waterfall Weir 16" (MPN F050)
$130.00 $91.00 | 228 Points
2" slip

Savio Waterfall Weir

Item Icons Add
Little Giant Preformed Spillways

Create a quick and easy waterfall effect with Little Giant Spillways. These Spillways are available in two different sizes, a 10", and 18". All of the Spillways include filter media to condition the water for a smooth waterfall effect. The 10" spillway has a 1" inlet with fitting and the 18" have both 1" and 1 1/2" fittings for easy installation.

    Features & Benefits:
  • No digging Required
  • Create a smooth or turbulent effect
  • Filter media included

Little Giant Preformed Spillways

Item Icons Inlet Max Flowrate Spillway Dimensions Add
1000 GPH
11" x 11.5" x 10.5"
1" and 1 1/2"
4000 GPH
19" x 11" x 10.5"
Savio F060 FilterWeir 31 inch

Creating appealing waterfalls is easy with FilterWeirs. FilterWeirs provide bio-mechanical filtration and the tranquil sounds and visual splendor of a cascading waterfall. Simple installation, solid construction, professional results. Use multiple units to build cascades and larger waterfalls. F060 Includes a sturdy media grate for plants and stones. Savio has unleashed a giant· the massive new FilterWeir 31. This easily installable weir provides the tranquil sounds and visual splendor of a cascading waterfall on a large scale. This is the way for do-it-yourself, and pond pros alike, to create an impressive, dramatic display of falling water, with professional results. Plus, it's easy to retrofit to existing ponds, and pond free systems, with flow rates up to 10,000 gallons per hour. Includes 31 inch face plate spillway, and a sturdy media grate for stones or potted plants.

Savio F060 FilterWeir 31 inch

Item Icons Inlet Add
Savio FilterWeir 31" (MPN F060)
$230.00 $161.00 | 403 Points
3" Slip
Pondmaster BioMatrix Filters & Falls
  • Wide Spillway for Greater Water Aeration
  • Easily Buried to Hide Filter from Sight
  • Designed to Accommodate Addition of Mechanical or Biological Filtering for Super-Clean Water

Pondmaster BioMatrix Filters & Falls

Item Icons Container Capacity Max Pump Flow Waterfall Width Dimensions (WxDxH") Add
1 Gal
950 GPH
8" Opening
9" x 12" x 8"
1.5 Gal
2,000 GPH
11-¼" Opening
12" x 15" x 9"
4 Gal
3,000 GPH
16" Opening
16" x 18" x 13"
Pondmaster Waterfall Box
  • Extra-Wide Spillway for Greater Water Aeration
  • Open Swirl Chamber for Even and Efficient Water Flow Through the Filter Media
  • Easily Buried In Ground To Hide Filter from Sight
  • Holds More Friendly Bacteria to Help Filtration
  • Made of High Impact ABS
  • Extra Long Weir Lip for Stacking Stones in Front of Waterfall
  • Pre-Bored Inlet Size of 2-½"
  • Packed Individually

Pondmaster Waterfall Box

Item Icons Container Capacity Max Pump Flow Waterfall Width Dimensions Add
1 Gal
950 GPH
8" Opening
8.75" x 12" x 6.5"
1 Gal
950 GPH
8" Opening
8.75" x 12" x 6.5"
1.5 Gal
2000 GPH
11-¼" Opening
12.75" x 12.25" x 8"
4 Gal
3000 GPH
16" Opening
16" x 18" x 13"
Out of Stock
Pond Boss Waterfall Spillway

The Pond Boss Waterfall Spillway and Filter seamlessly adds a waterfall to your pond. The spillway is easy to install and adds a dramatic effect. Made with durable UV resistant high impact plastic with connections on the back for tubing. The spillway is designed to be easily disguised so you can create a natural looking waterfall for your pond or disappearing water feature. 

  • Easily mounts to any liner for simple installation
  • Creates a waterfall effect
  • Durable, UV resistant, high impact plastic

Pond Boss Waterfall Spillway

Item Icons Add
Out of Stock
Out of Stock
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