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Floating Fountains & Dam Aerators

Floating Fountains and Aerators for Dams, Lakes and Large Ponds

Pond Help & Information

Need a hand working out the right gear for your project? Browse our range of help pages or submit a help request directly to our specialists.

Tornado Stainless Steel Multi Function Spillways

Projecting or Cascading Waterwall

One spillway box ... two functions, depending on the pump size. Gardens and ponds can come alive with these great spillways.

They can be used in a pond or as a stand alone water feature. Great to cascade down over stone book-leaf or tiled walls or project out in a blade of water.
Spillways must be installed with a lintel above them and must be supported underneath. Do not install brickwork, stone or anything else directly on top of the spillway box without additional support. 

To order, consult the information below then select the spillway which suits your needs from the drop down list on the side of the page and add to cart. Don't forget to also select your pipe inlet as bottom or rear entry (see diagram below for example of each - bottom entry as shown on the left image and back entry on the right image).

  • High Quality Marine Grade 316 Stainless Steel
  • For freshwater only, not ideal for chlorinated pools
  • Suitable for projecting out in a blade of water or cascading softly down the wall
  • Can project up to a maximum of 75mm from wall for a 300mm projection try the deluxe version - click here
  • Dimensions: 90mm H x 60mm W x (select your length) with a 40mm lip
  • All inlets are 25mm (1") BSP female threaded. 1 inlet on 300-600mm, 2 inlets on 900mm and 3 inlets on 1200-1500mm
  • Maximum recommended mounting height for projecting spillway is 900mm. Any higher than this and the water blade will start to break up and your feature will get very noisy. This is the same with every projecting spillway
  • Ponds and base troughs to collect your water also available - click here
  • Available with inlets either at the bottom or back of the box depending on your installation needs
  • Spillway plumbing kits available with pipework you can use to connect it up, suited to each spillway
  • Please consult below to help select a pump or call us for help on 1800 607 388


Aussie's Observations about Tornado Stainless Steel Multi Function Spillways

Rating:
Budget • Good • Better • Best • Superior

Suitable for:

Any wall mounted fresh water situation where a 40mm lip extension is suitable

What we liked:

The stainless work is first class, very well priced for the excellent quality. Fantastic value for money. Complete flexibility, can be used as a sheet descent (cascading) or a sheer descent (projecting) spillway just by using a different pump, or by reducing the flow the effect can be changed.

Less than ideal:

Because they are designed to function as both projecting sheet (sheer descent) & sheet descent spillways, they lack the performance of the purpose designed units such as the Deluxe types - Cascading Sheet descent or Projecting Sheer descent. Not suitable for pools with chlorine or saltwater. Try Waterblade.

From $159

Advantages of multi use spillways:

1) If you are not sure how aggressive you want the water flow, purchase the larger pump and by adjusting flow you can experiment.

2) During the day or while having a party, set the pump for projecting sheet, then after dark turn back the flow for a soft and gentle water sound for complete relaxation.

Disadvantages: 

They do not do either job as well as a purpose designed spillway such as the Deluxe Cascading Sheet descent or Deluxe Projecting Sheer descent spillways.

**What is a cascading sheet descent spillway? A stainless steel box with a delivery spout is mounted in a wall, water flows softly from the spillway and runs down the wall face into the pond or pool. Sheet descent units have been designed with a multi chamber internal baffle system to promote even flow over the spillway.

***What is a projecting sheer descent spillway? (also known as sheer descent water feature) stainless steel box with a delivery spout is mounted in a wall, a large volume of water passing through this special unit producing a solid sheet of water that projects away from the wall. The sheet of water does not touch the wall, but goes directly into the pond.

Hint 1: If being used as a projecting sheet effect, never mount higher that 900mm above the water. The further the water drops, the narrower it becomes due to surface tension. The drop in the photo's above is .9m to give you an idea. Another way to understand this tapering effect is that for every 50cm of drop, the width of the sheet of water narrows by about 10 cm.  After about 90cm of drop the sheet starts to break up.

Hint 2: Any elbows or tees in the system will reduce flow.  On the 2 inlet model spillways, it may be desirable to use two pumps, this will avoid the need for a tee.

Hint 3: Glass .. When water is run down glass, to improve water flow and maintain it's full width you should angle the wall between 2 to 5 degrees

Hint 4: Acrylic .. When water is run down Acrylic, to improve water flow and maintain it's full width you should angle the wall between 5 to 7 degrees

Hint 5: How to neatly get the electrical cable from the pump and the water tube out of the pond cleanly and allow for service. Click here

Step by Step Guide for selecting your spillway

Step 1

Choose the length of spillway that will best suit the installation position that you desire.

Step 2

Make a decision on what function is most appealing to you:
  1. Projecting Sheet (also known as Sheer Descent)
  2. Sheet Descent (softly down the wall)
  3. Both (refer to Projecting Sheet charts as the flow can be reduced on a larger pump to gain the Sheet Descent function)

Step 3

Measure the mounting height of where the spillway will be positioned. This is measured from the top of the pond water (not the pump position) to the spillway.

Step 4

Choosing your pump.

  • Refer to the relevant chart below (Projecting Sheet or Sheet Descent)
  • Find the spillway length that you have chosen, make note of the minimum litres per hour that are required to make a good display. Special note .. the litres per hour quoted are at the spillway, not at pond level. Example if the required flow is 1000 litres per hour, you will not need a 1,000 litres per hour pump, but a pump able to pump 1,000 litres per hour at the required mounting height , it may be a 2,000 litre pump, see the pump chart at the bottom of each pump page.
  • Decide if your pump will be inside or outside the pond
  • Finally decide on the quality of pump that you desire starting from the best quality on the left.

Once you have decided on a pump, click the link from the chart to visit the pumps page and refer to the chart at the bottom titled 'Flow rates at different pumping heights'. From this chart compare the litres per hour that the pump is capable of producing at the mounting/head height of where your spillway will be mounted. If this value is equal to or greater than the minimum litres per hour required for your spillway length then you can be 90% sure that you've made the right choice.

Step 5

Choose your plumbing kit

  • Under the multi-function chart refer to the relevant section (Projecting Sheet or Sheet Descent)
  • Find the spillway length that you have chosen
  • Decide if the supplied hose length is adequate, if this needs to be modified, let us know

Step 6

Choose your through wall fittings (if you plan on plumbing through the pond or wall)

Step 7

You should now have everything you need to order all the components to complete your spillway. Go ahead and make the order either online or by calling us on 1800 607 388.

 

Choosing your pump - additional information

 

Projecting mode - Maximum projection 75mm

How to choose your pump:

A projecting sheet spillway requires a flow of at least 850 Litres per hour for every 100 mm of spillway width. While a sheet descent sheet spillway requires a flow of at least 350 Litres per hour for every 100 mm of spillway width. This flow rate is measured at the spillway, therefore in choosing the pump, the distance* between the surface of the water and the spillway is a factor that only you will know.  We have therefore made a number of suggestions below based on about 1.0m mounting, covering a variety of price points. The (list starts with the best quality and works right). *The higher the water is being pumped, the larger the pump must be, also on 2 and 3 inlet spillways the flow must be higher because of the tee that is required in the plumbing.

Please note: the below pumps are only suggested possible pumps, there are many more alternatives available.


Potential pumps* When used as a sheet descent (softly down the wall)
Spillway
length
Min flow rate required at the spillway -
litres per hour
Pump
Location
Based on about 1000mm mounting height**
** Head, the distance between the top of the water in the pond and the mounting height of the spillway.
300 1050 Inside pond

Tornado Feature Pump PE 2000
Oase Aquarius Fountain 1500  

Outside pond Aquagarden Mako 1500
600 2100 Inside pond

Tornado Multi 4500
Laguna MaxFlo 4000
Oase Aquarius Universal Eco 3000

Outside pond

Oase Aquarius Universal Eco 3000  
Tornado Multi 4500

900 3150 Inside pond

Tornado PE4000
Laguna Maxflo 5000
Oase Aquarius Universal Eco 4000 
Aquagarden Mako 4000

Outside pond

Oase Aquarius Universal Eco 4000 
Aquagarden Mako 4000

1200 4200 Inside pond

Laguna Maxflo 5000 
Oase Aquarius Universal 6000 
Tornado Multi 6000

Outside pond

Aquagarden Mako 6000
Oase Aquarius Universal 6000 
Tornado Multi 6000

1500 5250 Inside pond

Laguna MaxFlo 7600 
Oase Aquarius Universal 6000

Outside pond

Oase Aquarius Universal 6000

Potential pumps* When used as a projecting sheet (sheer descent - not touching the wall)

Spillway length Min flow rate required at the spillway -
litres per hr
Pump
Location
*Based on about 900mm mounting height**
**Head, the distance between the top of the water in the pond and the mounting height of the spillway.
300 2550 Inside pond

Tornado Multi 4500
Laguna MaxFlo 5000 
Oase Aquarius Universal Eco 4000 
Aquagarden Mako 4000

Outside pond

Aquagarden Mako 4000
Oase Aquarius Universal Eco 4000 
Tornado Multi 4500

600 5100 Inside pond

Laguna MaxFlo 7600  
Oase Aquarius Universal 6000
Aquagarden Mako 9000 
Tornado Mutli 8000

Outside pond

Oase Aquarius Universal 6000
Aquagarden Mako 9000 
Tornado Multi 8000

900 7650 Inside pond

Aquagarden Barracuda 10000
Laguna Maxflo 9000
Oase Aquarius Universal 9000 
Tornado Multi 10000

Outside pond

Aquagarden Barracuda 10000
Oase Aquarius Universal 9000 
Tornado Multi 10000

1200 10200 Inside pond

Aquagarden Barracuda 15000
Laguna Maxflo 11000
Oase Aquarius Universal 12000 
Tornado Multi 15000

Outside pond

Aquagarden Barracuda 15000
Oase Aquarius Universal 12000 
Tornado Multi 15000

1500 12750 Inside pond

Aquagarden Barracuda 15000
Laguna Maxflo 16000
Oase Aquamax 20000 Eco Premium 
Tornado Multi 20000

Outside pond

Aquagarden Barracuda 15000
Oase Aquamax 20000 Eco Premium 
Tornado Multi 20000

Spillway plumbing kits available - Click for options