Our range of K1 Micro Bead filtration systems are pressurised filter systems that deliver incredible levels of filtration for ponds. By using the new K1 Micro filter media instead of conventional beads, these filters offer better biological and mechanical filtration. This is due to the vast protected surface area of the K1 Micro media. The media also improves flow through the filter meaning you can use lower energy pumps.
Max. Pond Size
K1 Micro Media
Multi-port Valve Size
Air Blower size
18,000 Litres 4,000 UK Gallons 4,800 US Gallons
36,000 Litres 8,000 UK Gallons 9,600 US Gallons
12,000 UK Gallons
14,500 US Gallons
20,000 UK Gallons
24,000 US Gallons
RECOMMENDED FLOW RATER FOR THE K1 MICRO BEAD FILTER:7000 AND 10000 LITRES PERHOUR.
How to install the K1 MICRO BEAD
THE k1micro bead filterr canbe installed as shown below.....if you are planning to use a pre filter such as the Evolution Aqua Cetus. If you are not planning to use a pre filter we highly recommend that you fit a strainer basket to the pump.
This will prevent leaves,string algae, etc. from entering the filter and pump. It is recommended that all pipe work on the plumb side [from the pump to the filter and back to the pond] is installed on 2" pipe.
Please Note :
on the K1 MicroBead 20 filter you will have to reduce your pipe down to 1 1/2" to connect to the multi-port valve. This will ensure that your pump is working at its maximum flow.
Do not operate the multi-port valve with the circulating pump is running.
How the K1 Micro Bead works
Water is pumped into the filter from the pond through the multi-port valve where the internal pipework directs the water to the bottom of the unit.
As the water flows upwards inside the K1 Micro Bead, dirt, debris and waste are trapped within the mass of K1 Micro filter media. The vast protected surface area provided by K1 Micro also provides a home for the beneficial bacteria, along with filter feeders such as Vorticella and Rotifiers delivering mechanical and biological filtration.
The new design of the Eazy enables the Nexus to capture solids more effectively than before. K1 Micro is used inside the re-designed Eazy helping to deliver improved capture of fine particles, delivering unrivalled mechanical filtration.
THE K1 MICRO BEAD FILTER IS OPERATED BY A MULTI-PORT VALVE. THIS MULTI-PORT VALVE FUNCTIONS BY PUSHING DOWN ON THE HANDLE, TURNINGIT AND RELOCATINGIT INTO ONE OF THE OPERATING POSITIONS SHOWN ON THE MULTI-PORT VALVE . THE VALVE MUST ALWAYS BE OPERATED WITH THE CIRCULATING PUMP SWITCHED OFF. THE BALL VLVE POSITION BELOW THE AIR BLOWER MUST BE CLOSED WHEN THE PUMP IS RUNNING BELOW WE OFFER AN EXPLANATION OF EACH OF THE MULTI-PORT VALVE'S FUNCTION.
2] BACK WASH THIS IS THE POSITION THE MULTI-PORT VALVE SHOULD BE IN FOR CLEANING THE K1 MICRO FILTER MEDIA. WITH THE VALVE IN THIS POSITION, WATER FLOW IS REVERSED THROUGH THE FILTER BED SO THAT THE WATER FLOW IS DIRECTIED TO THE TOPOF THE UNIT [B] AND EXITS THE UNIT AT [D] AND GOES OUT TO THE WASTE LINE[E]
3] RINSE: THIS IS THE POSITION THE MULTI-PORT VALVE SHOULD BE IN FOR AGITATING THE K1 MICRO FILTER MEDIA. WITH THE VALVE IN THIS POSITONS, AIR [SUPPLIED BY THE AIR BLOWER] IS USED TO AGITATE THE FILTER MEDIA. LATER ON IN THE CLEANING PROCESS, WATER IS USED TO RINSE THE K1 MICRO AND EXIT TO WASTE [E].
THIS IS THE POSITIION THE MULTI PORT VALVE SHOULD BE IN TO ALLOW WATER TO BY PASS THE FILTER BED AND DRAIN TO WASTE. [E]. WITH THE MULTI PORT VALVE IN THIS POSITION, THE WATER FLOW IS DIRECTED STRIGHT TO WASTE BY PASSING THE UNIT. THIS FUNCTION CAN BE USED TO LOWER THE WATER LEVEL OR FOR VACUUMING YOUR POND WITH OUT SOILING THE FILTER.
5. RE-CIRCULATE...THIS IS THE POSITION THE MULTI PORT VALVE SHOULD BE IN TO ALLOW WATER TO COMPLETELY BY PASS THE FILTER. WITH THE VALVE IN THIS POSITION, WATER IS PUMPED FROM THE POND TO THE MULTI PORT VALVE AND DIRECTLY BACK TO THE POND WITH OUT FLOWING THROUGH THE K1 MICRO BEAD FILTER. THIS IS PARTICULARYLY HANDY IF YOU ARE TREATING YOUR POND.
6] CLOSED..THIS IS THE POSITION THE MULTI PORT VAVE SHOULD BE IN FOR CLOSING ALL FLOW TO THE FILTER. THIS POSITION IS NOT TO BE USED WITH THE PUMP RUNNING. DO NOT OPERATE THE MULTI PORT VALVE WITH THE CIRCULATING PUMP SWITCHED ON. THE BALL VALVE MUST BE CLOSED WHEN THE CIRCULATING PUMP IS RUNNING.
1] FILTER...INCOMING WATER FROM THE POND ENTERS THE MPV AT POINT.[A] [SEE FIGURE 8]. THE WATER ENTERS THE VESSEL AT POINT [D] THEN FLOWS UPWARDS THROUGH THE K1 MICRO FILTER MEDIA TO THE TOP EXIT BAR [B]. THE FILTERED WATER IS RETURNED THROUGH THE MULTI PORT VALVE AT POINT [C] AND BACK INTO THE POND.
K+ has an extra layer of cells versus standard K1 media
But K+ has lots more surface area both inside and out when compared to standard K1, meaning even more ammonia busting power, more tiny homes for beneficial lifeforms like rotifers and if used in a static, not a moving bed, improved mechanical filtration capabilities too.
With 1350m2 per m3 total surface area and 1025m2 per m3 of protected surface area, K+ has the plastic filter media surface area race well and truly won, but a little known fact is that the more surface area you have, the longer it takes to mature in the first place. Think coating media with bacterial biofilm being like painting a fence. The longer the fence, the more time it takes to paint, and cover its surface.
So K+ designer and manufacturer Evolution Aqua in the UK has overcome this by adding minerals during the extrusion process to rough up the surface area of the media, and enzymes to make it sticky and further facilitate bacterial colonisation.
Take an airstone and some K+ media and build your own self-cleaning moving bed biofilter, either in a plastic bottle in the main tank or contained in a sump. And if you don’t want to be left out of the K+ protected surface area party they do a sinking, static version of K+ which you can put into any filter or reactor, replace or add to your current bio media, and use in the more conventional way.
K+ is suitable for all freshwater and saltwater tanks, and ponds.