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 Choosing your pump
   For both AquaFlo & Aqua-rt spillways

PUMPS:  How to choose : A projecting sheet spillway requires a flow of at least 700 Litres per hour for every 100mm of spillway width. While a sheet descent sheet spillway requires a flow of at least 350 Litres per hour for every 100mm 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 read the hints section at bottom of page
 

Potential pond 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 1,050 Inside pond Pondmate 2400  Max Flo 3500    Eden 135     Oase Neptun 2000
Outside pond Pondmate 2400         Oase Neptun 2000
600 2.100 Inside pond Pondmate 3500         Oase Neptun 3000
Outside pond Pondmate 3500         Oase Neptun 3000
900 3,150 Inside pond Pondmate 4800   Max Flo 6000      Oase Neptun 4000     Little Giant WGP55   
Outside pond Pondmate 4800         Oase Neptun 4000
1200 4,200 Inside pond Pondmate 6000         Oase Neptun 5000    
Outside pond Pondmate 6000         Oase Neptun 5000
1500 5,250 Inside pond Pondmate 6000   Max Flo 7500**      Oase Neptun 6000      
Outside pond Pondmate 6000         Oase Neptun 6000
1800 6,300 Inside pond Pondmate 8500   Max Flo 9000**      Oase Neptun 9000      Little Giant WGP65   
Outside pond Pondmate 8500         Oase Neptun 9000
2400 8,400 Inside pond Pondmate 10000    Max Flo 11000**     Oase Neptun 9000     Little Giant WGP75   
Outside pond Pondmate 10000         Oase Neptun 9000

**See hint 6 at bottom of page regarding this pump for the above spillways


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

Min flow rate required  at the spillway -
 litres per hour

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 2,100 Inside pond Pondmate 3500       Oase Neptun 3000
Outside pond Pondmate 3500       Oase Neptun 3000
600 4,200 Inside pond Pondmate 4800   Max Flo 6000**     Oase Neptun 5000
Outside pond Pondmate 4800       Oase Neptun 5000
900 6,300 Inside pond Pondmate 8500   Max Flo 7500**    Little Giant WGP65
Outside pond Pondmate 8500       Oase Neptun 9000
1200 8,400 Inside pond Pondmate 10000   Max Flo 11000**   Oase Neptun 9000
Little Giant WGP75
Outside pond Pondmate 10000      Oase Neptun 9000
1500 10,500 Inside pond Pondmate 15000      Oase Neptun 12000
 Little Giant WGP95
Outside pond Pondmate 15000
1800 15,300 Inside pond Pondmate 18000    
Outside pond Pondmate 18000
2400 16,800 Inside pond Oase Profinaut 21    
Outside pond Oase Profinaut 21

**See hint 6 at bottom of page regarding this pump for the above spillways
Aussie says

**Head, the distance between the top of the water in the pond and the mounting height of the spillway. 
Tip 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 100mm.  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

Hint 6: Best pump type The best pump for this type of spillway is one that will not allow particles to block or partial block the water delivery slot. This makes the Pondmate range up to the 8500 model ideal as this pump includes a foam pre filter.
The best quality pump we have, the Oase Neptun does not have a pre filter, however, a foam block filter can be added.
Pump like the Laguna Maxflo are intended as a pump for a filter and therefore will take in lots of particles and debris. The only solution to make this pump suitable is to cover the pump cage with fly screen wire or similar.
   

 

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