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Water Dragon LogoWater Dragon Pressure flo -
Filter pond size chart

Important note.....

The figures below are only intended as a guide, many factors come into account when choosing both the perfect pump and filter. They include sun, pond depth, size of pond, hose size and length, waterfall height and of course fish stocking -

3 ways to get help to establish flow

  1. Fill in one of our e-mail help forms and let us do all the calculations for you

  2. Give us a call 1800 607 388 for expert advice

  3. Do it yourself and use our quick reference flow calculator for rough estimate

Pond size selection

Maximum Pump flow L/H Shaded Pond Pond in full sun
Maximum pump flow No/Few fish Medium fish Heavy fish No/Few fish Medium fish Heavy fish Koi and turtles
PF 4000 - 10w UVC 3,000 4,000 litres 3,000 litres 2,000 litres 3,500 litres 2,000 litres 1,500 litres 1,200 litres
PF 8000 - 10w UVC 4,500 8,000 litres 6,000 litres 4,000 litres 6,000 litres 4,000 litres 3,000 litres 2,400
PF 12000 17w UVC 6,000 12,000 litres 9,000 litres 6,000 litres 9,000 litres 7,000 litres 5,000 litres 3,700 litres
*No fish - Near natural garden ponds in shade, at least 70cm deep with plant zones, without fish.
**Some fish - Near natural garden pond with plants and fish stock of 50cm per 1,000 litres
***Medium fish - Near natural garden pond with plants and fish stock of up to 60cm per 1,000 litres
**** Heavy fish- Near natural garden pond with plants and fish stock of up to 80cm per 1,000 litres
***** Koi and Turtles -
Pressure filters are not ideal for Koi or turtles due to the extreme amount of waste they create and have trouble processing the waste due to their design , therefore, gravity filters are better suited.
However, due to their size and fact that gravity filters must be mounted at the top of a waterfall or above pond level, there may be no other choice. In this case use a pressure filter but we suggest that the pump and filter be a little oversize maintain water quality.
For Australian conditions
... The above figures have been adjusted by us for Australian conditions, please do not be confused by anyone else's calculations that may be for the European market as they are different because of our climate