AllPondSolutions CUV-155 Manual - Page 13
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3. If you find that the unit is still leaking after the above checks or there is an
obvious casing crack, you will need to replace the body casing on the unit.
Green Water or Cloudy/Brown Water?
In order to correctly identify if you have green water or cloudy/brown water, a
settlement test should be carried out.
Take a jar of pond water and allow to settle for 24 hours.
Green Tinge - If your jar is showing mostly green tinged water or has green
particles floating in it, you most likely have a bit of an algae problem (follow
the green water trouble shooting guide).
Brown Tinge / Water with Sediments - this indicates that you have organic
debris decomposing in your pond. This can be particles from dead leaves,
twigs and other plant debris that are breaking down (follow the brown water
trouble shooting guide).
The UV Bulb is on But My Pond is Green
There are a lot of different factors which contribute to this type of issue and it
may not be the UV system at fault. The steriliser will work to maintain rather
than transform water quality so you may need to add treatments to clear poor
quality water or consider a heavy water change. If the UV light is working then
the product is functioning correctly.
Algae growth in water can be due to high phosphate and nitrate and green
water is heightened in the summer period due to the extra sunlight so it is also
advised that a water test is carried out.
1. Pond Position - The position of the pond should also be considered, as this
affects how much sunlight is directly falling on the pond. Algae growth is very
likely to require a treatment to resolve the growth. Consider purchasing the All
Pond Solutions Green Water treatment or Blanketweed treatment.
The orientation of the garden can also be an issue; south facing gardens
inevitably get more sunlight and can cause ponds to be greener in the
summer if exposed all day. Try and shade your pond water surface, floating
pond plants such as Lilies are a great way to do this.
2. Pump's Flow Rate - the flow rate of the pump exceeds the maximum flow
rate that the UVC is able to handle. Check your unit's specifications and reduce
the pump flow rate if needed.
3. Filter - the pond filter works with the UV steriliser to keep the water clear by
removing the dead algae. Check if your filter size is adequate to your pond size.
4. Quartz Sleeve - check if your quartz sleeve is dirty or coated in limescale.
Gently remove the quartz sleeve and clean it.