How Do You Rid Your Tank Of Duckweed? Question

  1. 75g Discus Tank

    75g Discus Tank Fishlore VIP Member

    Hello Fellow Fishlorians!

    Duckweed has overtaken my 20 long. How do I get rid of it completely?
    Most things that eat duckweed would probably eat my other plants.
    Any methods to get rid of it?
     
  2. Fanatic

    Fanatic Fishlore VIP Member

    I recommend scooping as much as you need to be removed, that stuff grows fast.
    People who keep duckweed their tanks, usually plan a time to scoop some out and rid of it.
     
  3. OP
    OP
    75g Discus Tank

    75g Discus Tank Fishlore VIP Member

    Lots of my plants get trapped in the duckweed so whenever I scoop it out, I accidentally throw some of my wanted plants away.

    Would flooding the tank work?
     
  4. techfool

    techfool Valued Member Member

    You're stuck with it. People have found that stuff growing on their walls.
     
  5. Fanatic

    Fanatic Fishlore VIP Member

    I don't really know, but flooding a tank would scare me :p
     
  6. OP
    OP
    75g Discus Tank

    75g Discus Tank Fishlore VIP Member

    Well not really flooding the tank, but bringing the water level to right above this lip.

    That way, I can net the duckweed a lot easier without disturbing the lower plants.(I think...)
     

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  7. Fanatic

    Fanatic Fishlore VIP Member

    That will work, if you work carefully.
     
  8. IHaveADogToo

    IHaveADogToo Well Known Member Member

    Babysit a goldfish. All the duckweed will disappear in just a few hours.
     
  9. OP
    OP
    75g Discus Tank

    75g Discus Tank Fishlore VIP Member

    I have a couple of them.
    9 fancies and a ton of grown up feeders in my pond.

    They would eat all of the other plants though.
     
  10. Fahn

    Fahn Fishlore VIP Member

    Skim off as much as possible, turn off any pumps or filtration, and take some time to pick out stragglers with a small net or spoon.
     
  11. Mazeus

    Mazeus Well Known Member Member

    Once you skim it off, you could add a couple of airstones to the tank. The surface aggitation created by the airstones should impeded the regrowth. I can't keep any floating plants alive in my 45g even duckweed (I've tried) because there is too much surface aggitation from the airstones.
     
  12. rainbowsprinkles

    rainbowsprinkles Valued Member Member

    Perfect! Now you have a free food source!
     
  13. OP
    OP
    75g Discus Tank

    75g Discus Tank Fishlore VIP Member

    That’s a really good idea, but this is a betta tank and I don’t want to blow them around.
     
  14. Mazeus

    Mazeus Well Known Member Member

    My betta doesn't seem too bothered by airstones. The one draw back for him is that he can't make bubble nests. It could only be temporary, once the duckweed is gone you could remove the airstones.
     
  15. DoubleDutch

    DoubleDutch Fishlore Legend Member

    Get some ducks hahaha.
    Afraid you won't get rid of it, so start to see it as a great nitratemuncher / provider of shade and get some out every week (some people make salads out of it)
     
  16. midna

    midna Well Known Member Member

    oh my god. duckweed salad. it's actually a thing.
    i don't know how i'd feel eating something out of my fish tank though...
     
  17. allllien

    allllien Valued Member Member

    A really fine net, fill water as high as you can (leaving enough room to stick your hands in without it overflowing) hold down the good plants underneath the water surface where your scooping and gently shake them as you go, to release any duckweed that might be stuck in them. It would be a slow and tedious process though lol.
     
  18. OP
    OP
    75g Discus Tank

    75g Discus Tank Fishlore VIP Member

    I read an article about this. They farm duckweed in ponds with manure and use it for salads. Kinda cool.