FAQ Search Results

Why is the water level in the Nexus outer chamber much lower than in the inner chamber?
• The pump could be too powerful, so the Nexus+ is being emptied before the pond refills it by gravity. • There could be a blockage in the transfer port between the inner and chamber and the outer chamber. You need to back flush it. You can download...
What size pump do I need for my Nexus?
Maximum recommended flow on the 220 is 10,000lph and the 320 is 13,000lph, however suggested flow rates are lower. Slower is better for fine removal and clearer water. Aim to turn over your pond volume every two to three hours. The Evolution Aqua Varipump...
Can Nexus+ be gravity or pump fed?
Yes, it can easily be adapted to either filtration method by simply swapping the supplied rubber boots.
How much media does NexusPlus have/need?
The Nexus 220+ comes with 18 litres of K1 Micro in the Eazy (inner chamber,) and 50 litres of K+Media in the outer chamber. The Nexus 320+ comes with 20 litres of K1 Micro in the Eazy (inner chamber,) and 100 litres of K+Media in the outer chamber. ...
Do I need an airpump for NexusPlus?
Yes, it powers the moving bed biological filter and is also vital to the cleaning process. You need an Evolution Aqua Air Pump 75 for a Nexus 220 and an Air Pump 95 for a Nexus 320. If you increase the amount of media in the outer chamber you may well...
How does the Nexus Automatic Control Box work?
Understanding the Nexus Automatic Control Box Video This video will show you how the Nexus Automatic Control Box works. This will help you to troubleshoot any issues you may have encountered along side our other troubleshooting videos for the Nexus ...
How does the Nexus Automatic Air Control Valve Box work?
This video will show you how the Nexus Automatic Air Control Valve Box works. This will help you to troubleshoot any issues you may have encountered along side our other troubleshooting videos for the Nexus Automatic Control Box.
How does the Nexus Automatic Inlet Plate Relay work?
This video will show you how the Nexus Automatic Inlet Plate Relays work. This will help you to troubleshoot any issues you may have encountered along side our other troubleshooting videos for the Nexus Automatic Control Box.
How does the Nexus Automatic Waste Valve Relay work?
This video will show you how the Nexus Automatic Waste Valve Relay works. This will help you to troubleshoot any issues you may have encountered along side our other troubleshooting videos for the Nexus Automatic Control Box.
How long is the standpipe for the return in a Nexus+ that is pump-fed?
The return pipe is 40.5cm long in the 220 and 46cm long in the 320
How much water is in the Nexus+?
Nexus 220+ Total volume of water 510 litres / 112 UK gallons / 135 US gallons Outer chamber 405 litres / 89 UK gallons / 107 US gallons Inner chamber 105 litres / 23 UK gallons / 28 US gallons Nexus 320+ Total volume of water 840 litres / ...
My Nexus is not draining to waste when valve is opened.
Remove the outside union on the waste ball valve, open the valve, if no water pours out the blockage is under the Nexus, carefully push a suitable stick (such as a cane) and release the blockage, you can also remove the Eazy and access the pipe from ...
The inlet valve does not turn on my Nexus during a cleaning cycle.
Check if the inlet valve is being obstructed. Check if the yellow light is illuminated. If light is not illuminated after 3 minutes, initiate a manual clean to check operation. Check the wiring is correctly installed. Seek advice from a suitably ...
How do I identify the spare part I need for my Nexus?
You can identify the spare part you need in the Nexus manual, the spare parts list is located on page 29. To view the manual, click here. Alternatively, you can identify the spare part you need from the image below.
I have Sturgeon, Can I use Stop Blanketweed?
K1 Micro is floating but K+Media is not in my Nexus, why is this?
The K+Media in normal conditions becomes semi-buoyant within 48 hours. However, the K1 Micro (only in the Eazy) takes longer to absorb water. This can take up to one week.
The K1 Micro in the Nexus Eazy doesn’t move well during the cleaning cycle
The reasons for this could be one of the following: The air pump is not powerful enough (see Air Pump Recommendation on page 4) There isn’t enough water in the Nexus – check that you used the cleaning pipe to maintain the level on a pump fed system...
I have an Ammonia and / or Nitrite reading.
A typical filter can take approximately 8 weeks to mature. During this time Ammonia and Nitrite levels will rise and fall. This process can be accelerated by using PUREPOND. If you still experience Ammonia and Nitrite readings after this period of time...
I am using a Nexus, my pond has been running for longer than 2 months and my water is cloudy, why?
It is important that the Eazy is flushed a minimum of 2 times during cleaning. This ensures that all the debris collected is flushed out to waste. If the unit is only cleaned once some debris can be returned to the pond, clouding the water. Flush the...
My Nexus is blocked with media/debris between the eazy and the main chamber
To clear the block you will need to drain down the outer chamber and clear the kiss points with a small flat screwdriver.You will then need to refill the filter, the media should float up so it can remove by hand.
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