Nexus 320+ Installation in King’s Lynn: Solving Green Water & Foam in a 33,000-Litre Koi Pond

5 Jan

When pond owners contact us, it’s often after they’ve already tried other companies.

This Nexus 320+ installation in King’s Lynn is a good example of why correct filtration — and reliable follow-up — matters more than quick fixes.

The client had previously contacted other pond firms. One had even worked on the pond before. None followed up. When ABBCO was contacted, we replied and arranged a visit.

The Issue: Green Water and Foam in a Large Koi Pond

The pond held approximately 33,000 litres and was suffering from:

Persistent green water
Surface foam
Poor visibility despite existing equipment

These symptoms usually point to undersized or inefficient filtration, particularly in koi ponds with high biological load.

Due to a busy schedule, the initial inspection took place early on a Sunday morning, at an agreed time.

Honest Assessment, Not Guesswork

Before recommending equipment, the pond was assessed to understand:

Existing filtration performance
Fish load and feeding levels
Water circulation and returns

It became clear that the pond required a proper filtration upgrade, not additives or temporary treatments.

The recommendation was a Nexus 320+ filter, correctly specified for the pond volume and stocking levels — a proven solution for koi ponds experiencing ongoing clarity issues.

Struggling With Green Water or Foam in a Koi Pond?

If your pond hasn’t cleared despite previous work, it’s usually a filtration issue.
A correctly sized system can make the difference between constant problems and stable, clear water.

→ Speak to a pond filtration specialist

Nexus 320+ Filter Installation in King’s Lynn

The Nexus 320+ was installed at the agreed time, with careful attention to:

Pipework layout
Flow rates and pump sizing
Ease of maintenance and access

Filtration systems only perform properly when they’re installed correctly — and when the owner understands how to run them.

Follow-Up Support Makes the Difference

Three weeks after installation, a return visit was arranged to:

Check system performance
Fine-tune flow and balance
Show the client how to back-flush and maintain the Nexus filter correctly

This step is often overlooked, but it’s essential for long-term results.

Results After Five Weeks

Within five weeks:

The green water had fully cleared
Surface foam had disappeared
Visibility reached 1.6 metres to the pond bottom

This outcome was achieved through correct filtration, correct setup, and proper follow-up — not short-term fixes.

Client Feedback

*“I cannot recommend ABBCO enough.
I had a problem with my 33,000-litre pond with green water and foam. I was let down by another company. When I contacted ABBCO, Morgan came out on a Sunday at the agreed time.

He gave honest advice which was acted on and implemented. A new Nexus filter was installed again at the agreed time. He came back after three weeks to show me how to back flush the filter.

Morgan is a very knowledgeable, friendly and professional person. After five weeks I can now see the bottom of the pond at 1.6 metres and the foam is gone.”*

Why Filtration Upgrades Matter in Koi Ponds

Koi ponds place heavy demand on filtration systems. When filters are undersized or incorrectly installed, problems like green water, foam and poor water quality become ongoing issues.

Correctly specified filtration:

Improves water clarity
Supports fish health
Reduces maintenance time
Delivers long-term stability

Need Help With a Pond Filtration Problem?

If your pond water isn’t clearing, even after previous work, an on-site assessment will usually identify the cause quickly.

ABBCO provides pond filtration upgrades, Nexus filter installations, fault-finding and koi pond support across Norfolk, Suffolk, Essex and surrounding areas.

→ Get in touch to discuss your pond

FAQs

Do I need a Nexus filter for my koi pond?
Not always. The correct filter depends on pond size, fish load and existing setup. An assessment ensures the right solution.

How long does it take for a new filter to clear green water?
Most systems show improvement within weeks as beneficial bacteria establish, provided the filter is correctly sized and maintained.

Do you install Nexus filters in existing ponds?
Yes — upgrades and retrofits are common and often solve long-standing issues.