Stream with Algae

Discussion in 'Water Features' started by scweedman, Jan 16, 2008.

  1. scweedman

    scweedman LawnSite Senior Member
    Messages: 499

    I have an account with a man made(concrete) stream that goes into a large pond
    then is pumped back to the top of the stream.The pond is treated by a
    pond company and looks good.My problem is the stream has algae
    and its not a closed loop of water so when i treat the stream it is just going
    down to the pond.I'm not sure if there is a slow dissolving tablet that
    i could place at the top and keep the algae under control?
  2. n2h20

    n2h20 LawnSite Senior Member
    Messages: 503

    algae seems to grow in the shallow parts first, warmer water.. if algae grows it is usually due to higher amounts of nutrients in the pond.

    I would suggest cleaning the rocks or whatever is in the stream bed.. flush it out. this will help remove some of the nutrients in the stream bed and should help with the algae.

    there are products that you could use to fight off the algae, but 1. i hate to use products unless i really have to and 2. im sure the pond company wouldnt like it if you were adding chems to "their" pond.
  3. scweedman

    scweedman LawnSite Senior Member
    Messages: 499

    I have drained the stream and pressure washed it but there has to be and easier way.
  4. n2h20

    n2h20 LawnSite Senior Member
    Messages: 503

    try to start a regular water change of 10% every week or 40% once a month. you will see change in about a month.

    OR clean the filters more often and add a few plants.
    IS there alot of crud on the bottom of the pond?
    IS it a gravel bottom pond?
  5. scweedman

    scweedman LawnSite Senior Member
    Messages: 499

    The stream has a clean bottom, concrete, No filters just pumps water off of the top
    of the pond to the top of stream. The pond has dirt bottom or mud
    I will get some pictures monday if that will give u an idea of what i am
    dealing with

  6. AI Inc

    AI Inc LawnSite Fanatic
    Messages: 26,797

    Can you lower the pump to pump from deeper in the pond avoiding surface alge?
  7. n2h20

    n2h20 LawnSite Senior Member
    Messages: 503

    what kind of mud or dirt? I ask because i have seen several ponds that the builder have set a "bog" area up using dirt or potting soils. This is not good because the dirt has so many organics in it that they decompose and rot, adding nutrients to the pond water, causing algae to grow.

    Whats the fish load like? how big is the pond?
    you say there arent any filters? is there alot of plants in the pond?
    I think water changes would be your best solution.
  8. LedgedaleLawn

    LedgedaleLawn LawnSite Senior Member
    Messages: 377

    I have had good luck with recommending a "bacteria" regiment for my customers.
  9. Tom B.

    Tom B. LawnSite Member
    Messages: 90

    Barley straw works.

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