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Controlling Pea-Green Algae – Water Garden Q & A


Q: I have a pea-green algae problem. What is the quickest, safest way to overcome this problem? -Ruth of Starkville, MS

A: When dealing with planktonic algae or “pea-green algae”, it cannot be simply eliminated using a product like AlgaeFix. AlgaeFix works great on string algae or other patches of free-floating algae, but with planktonic algae, there is so much that you run the risk of depleting oxygen levels to a point that is unsafe for fish. One of the best ways to get rid of this type of algae is through the use of a UV Filter. As the planktonic algae passes throught the ultraviolet light, it will die. UV lights work so well that within just a few days your water will be crystal clear.

2 Responses

  1. I have heard that using a UV filter light prevents the Koi from producing babies. Is this true?

    • Maureen,

      Good question. Usually you don’t have a problem since koi like to lay their eggs to attach to either string algae or water hyacinth. They stick extremely well and are very unlikely to every go through a UV filter in the first place.

      Hope this makes sense, thanks for the question!

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