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Creating The Perfect Pond With UV | Learning Center


UV Clarifiers are designed to destroy the ultra fine planktonic algae that cause green water. When algae cells are exposed to the bulb’s ultraviolet rays, the radiation destroys the cellular wall of the planktonic algae. As a result, the tiny particles of dead algae clump together and are removed by your mechanical filtration system.

UV clarifiers are a great addition to a pond suffering from green water caused by full sun exposure or too many fish. Please note, UV Clarifiers do not affect string algae.

Be sure to pay attention to the flow rates listed on each particular UV filter. If your pump’s flow rate is higher than recommended, algae will not be exposed to the UV radiation long enough to damage the cell. Thus, rendering the UV filter virtually useless. By using a pump that is too large, you also run the risk of damaging the UV unit by creating too much pressure. If your pump is too small, you run the risk of the UV clarifier acting like a sterilizer. With slowly moving water, the UV bulb will kill both the algae and any beneficial bacteria that floats by.

While a UV clarifier can work wonders on your water garden it is only a patch to the real issue. Make sure you are properly maintaining your pond, using an adequate amount of filtration, keeping a low fish population, and utilizing your bacteria products.

2 Responses

  1. Hi,
    We have a new 3/4 ac. field pond and I just had the Ph tested by the county.
    The Ph is 7.0
    Do I still need to fertilize? If so , what kind of fert. and analysis.
    I think i’m supposed to wait til the water is at a constant 60 deg, right?
    Do I need to add lime at this point?
    Thanks much
    Ralph

    • Hi Ralph – In large ponds, the pH is not going to be easy to change. A pH range of 6.5-8.5 is fine for most fish and wildlife. You will not want to make any changes until your pond has had some time to settle. Additionally, you want to check your readings several times per day over the course of a week or so to account for pH swings. A pond’s pH is very cyclical with highest readings in the afternoon/evening and lowest readings in early morning.

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