AquaForte Sieve Filters

Sieve filter; a widely used pre-filter

In a sieve filter the water from the pond is led over a curved sieve. The sieve consists of hundreds of triangular sticks with a spacing of 0.2 or 0.3 mm (also called 200 or 300 microns). The rods are slightly tilted, so that the coarser dirt remains on the sieve and the ‘sieved’ water falls through. The sieved water is led further to the main filter. AquaForte has various sieve filters in its range, such as the CompactSieve, MidiSieve, SmartSieve and UltraSieve.

AquaForte UltraSieve III

UltraSieve filters are the most reliable pre-filters on the market. This is partly due to the simple design, with just one moving part. The pre-filter is not self-cleaning, but it is very easy to maintain. Open the slide valve and the debris can be washed away. The UltraSieve pre-filters have a stainless steel filter element that never needs to be replaced. Thanks to the triangular stainless steel rods at a 7° angle, the water falls directly through the sieve, but the debris remains. A major advantage of this principle is that the debris is truly removed from the water circulation. This is highly beneficial to the water quality, because waste products are no longer polluting the water.

  • The most efficient pre-filter for (swimming) ponds
  • Reliable! (only one moving part)
  • Stainless steel filter element
  • Waste is directly separated from the water circulation
  • .

  • No sound
  • No water loss
  • Waste can be 100% recycled
  • .

  • Very easy to maintain
  • Ideal for swimming ponds!
  • Already more than 15 years market leader
Type Flow m³/h Dimension L x W x H Sieve element
UltraSieve III 200 (very fine) 2 inlets SK210 30 65 x 37 x 100 cm 200 Micron
UltraSieve III 300 (standard) SK211 30 65 x 37 x 100 cm 300 Micron
UltraSieve III 300 with 3 inlets SK258 30 65 x 37 x 100 cm 300 Micron

AquaForte UltraSieve Low, Low L & Low XL

• Large water capacity possible.
• The ‘LOW’ models have a high inlet (centre line at 50 cm).
• Easy to install.
• Flexibility of multiple inputs and outputs.
• Pre-filtration down to 200 or 300 microns.
• Maintenance-friendly.

Type Flow m³/h Dimension L x W x H Sieve element
UltraSieve Low (2 inlets) SK350 25 64 x 37 x 75 cm 200 Micron
UltraSieve Low “L” (3 inlets) SK354 35 64 x 53 x 75 cm 300 Micron
UltraSieve Low “XL” (3 inlets) SK200 40 64 x 73 x 75 cm 300 Micron

AquaForte SkimmerSieve for Swimming Ponds

Aquaforte introduces 2 new skimmer sieves; the Midi and Low. Specially designed for natural swimming ponds/biopools where large flow and efficient waste collection are vital. The sets consists out of an UltraSieve Midi or Low with an extra inlet of Ø160mm, a wide mouth skimmer with a flange connection of Ø160mm. The supplied flexible coupling of Ø160mm allows a direct and easy connection. A large advantage of this system is that the Sieve unit can be build further away from the pond/pool with standard Ø160mm pipes and fittings! This way distances of > 10 meters are easily bridged! The skimmer has no strainer basket so all the waste goes directly to the sieve for easy maintenance! The Ø160mm flange with wide mouth skimmer is also separately available (to connect 2 skimmers on 1 skimmer sieve for example).

Type Flow m³/h Sieve element
SkimmerSieve Midi SK360 12 300 Micron
SkimmerSieve Low SK362 25 300 Micron

AquaForte MIDISieve

The smaller version of the successful UltraSieve III is here! The perfect solution for pump capacities up to ±12m³/h (MidiSieve) or 15m³/h (MidiSieve XL). The most ideal pre-filter! Create a compact filter system by combining the UltraSieve MIDI with a beadfilter or other pump fed filters. The pump connection comes with a long suction pipe which draws the water from under the float to prevent air suction.

  • 110mm inlet
  • 2″ Male thr. pump connection with 63mm PVC fitting
  • 2″ Male thr. connection with end cap for waste removal (MidiSieve XL= 50mm)
  • Extreme compact dimensions
  • Comes with a 300 micron Stainless Steel screen
Type Flow m³/h Dimension L x W x H Sieve element
MIDI Sieve 300 micron SK332 12 56 x 27 x 74 cm 300 Micron
MIDI Sieve XL 300 micron SK348 15 56 x 27 x 89 cm 300 Micron


AquaForte CompactSieve

Compact version of the UltraSieve for use only in a pump fed configuration. Very easy to use: a dirty water pond pump is connected directly to the CompactSieve input. The water flows through the sieve which removes all particle matter down to a size of 300 micron. The CompactSieve must always be installed above pond level.


  • As a dirt filter directly next to the pond or in front of a stream/waterfall (A)
  • As a pre-filter above a pump-fed (vortex/multi-chamber) filter (B)
  • As a trickle filter combined with the same empty housing (C)
  • As a dirt filter after a pond so that the purified water is not discharged but can go back into the pond (D)
  • As a dirt filter after a pond skimmer (E)
  • The stainless steel screening element is 24 cm wide and 40 cm long and has a diameter of 300 microns. Max. capacity is ± 15m³/hour. Pump input via 3-stage hose barb.
    of 25/32/40mm. Comes with lid. Spout and overflow protection 75mm, standard with cuff fittings. Available in dark green or blue granite PE.

    Type Flow m³/h Dimension L x W x H Sieve element
    CompactSieve 300μ green SK306 15 49 x 32 x 55 cm 300 Micron
    CompactSieve 300μ blue SK308 15 49 x 32 x 55 cm 300 Micron


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