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  1. #31
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    Re: How to feed duckweed

    Interesting read. I had added an airstone thinking that maybe lack of O2 was part of the problem, but that's the opposite of what I should be doing! The water flows from by sump up to the duckweed tank and then overflows into the FT. The water is relatively still, but there is a high exchange rate. I'll have to setup a different, stagnant tank with some of the duckweed and see if it fares much better.

  2. #32
    Members Roger L.'s Avatar
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    Re: How to feed duckweed

    I did the same thing too Eddie. Adding more ammonia seemed to be counter-intuitive. This is why I needed this forum, I couldn't find the book "Aquaponics" for the simple minded. Thanks for the input because for the short time I have changed things around it seems I am getting some growth in my outside container. Another week or two of testing and if it goes well we be bringing in a kiddie pool.
    At what point did our government cease to be of the people, by the people, and for the people?

  3. #33
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    Re: How to feed duckweed

    I have seen systems that use plastic containers with the bottoms cut out to grow duckweed directly in the fish tank without letting it spread/take over the tank

  4. #34
    Members bsfman's Avatar
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    Re: How to feed duckweed

    Quote Originally Posted by sylvgrb
    I have seen systems that use plastic containers with the bottoms cut out to grow duckweed directly in the fish tank without letting it spread/take over the tank
    What keeps the fish from eating all the duckweed out of the bottomless containers?

  5. #35
    Moderator JCO's Avatar
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    Re: How to feed duckweed

    Good question BSFman, but with the bottom cut out, how does the container float?
    JCO
    Irish eyes are always smiling but
    • "In the eyes of the world, you are only as good as your last success"
    so never forget
    • "MAN IS ONLY LIMITED BY HIS IMAGINATION"

  6. #36
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    Re: How to feed duckweed

    I recently had to move 800 1 inch fingerlings to a larger tank so I used the IBC I was growing duckweed in. In 4 days I had no duckweed.

  7. #37
    Moderator JCO's Avatar
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    Re: How to feed duckweed

    And your question is what...small fish love duckweed and now you know it to..grow your duckweed elsewhere and feed it from there
    JCO
    Irish eyes are always smiling but
    • "In the eyes of the world, you are only as good as your last success"
    so never forget
    • "MAN IS ONLY LIMITED BY HIS IMAGINATION"

  8. #38
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    Mar 2014
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    Re: How to feed duckweed

    JCO, BSFman, Check out this video. https://www.youtube.com/watch?v=4ksnnwxlq1g

  9. #39
    Members Apollo's Avatar
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    Phoenix, AZ
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    Re: How to feed duckweed

    Thanks JeffS,

    Good video... I've been wanting to do this for some time now. I'm going to build a small one for my Breeding Tank and a larger one to put in my main tank.

    Now, where do you buy the duckweed to start out with? Are there more than one kind?

  10. #40
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    Re: How to feed duckweed

    I bought a small amount online. Don't remember where. Just a zip lock bag full. Grew it in small containers for a while. Worked but not well. Finally I had an IBC full of fish water and no fish. Dumped it all in there and it grew well.... until I put the fish in.
    Now I have to get more. Might wait til spring so I can grow it outside.

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