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Discussion Starter #1
When I put some shrimp in my Betta's tank I noticed some duckweed was in the bag they came in. I decided to pick them out and put them in his tank. They are starting to multiply. But noticed this morning that there was this mungy white stuff below their roots. In the picture the mung is attached to the fake betta log with the duckweed above it. Normal I guess or something need to worry about? Have never done live plants in an aquarium.

 

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Discussion Starter #3
I might end up doing that. Every thing I've read says duckweed can get out of hand so I knew that I might end up regretting putting it in the tank.
 

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On the plus side, duckweed is a great filter and all you have to do is scoop it out, dry it, and toss it. DO NOT FLUSH IT as it can be a noxious weed.
 

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Duckweed is a lovely plant to have. Bettas use it to build bubblenests, but it can block out the light for other plants. If you want to get rid of it, throw it away. This way, it can actually dry out and not end up in any other waterways.
 

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Discussion Starter #7 (Edited)
Well the duckweed gets to stay.....For now.It was something with the fake floating betta log! Well that's the working theory anyway. As the day progressed the mung got worse on the log. I have pulled it out and given a very good cleaning/rinse . I found what I think may have been a chunk of decaying plant or animal matter that may have gotten it going. Maybe part of one of the missing shrimp. The attempt to introduce the shrimp has actually been a disaster, funny but the legacy of trying the shrimp may end up being the duckweed that hitchhiked in with them . All my water parameters are ok, Brutus the betta looks happy, so I will keep a close eye on things. Thanks for the input!!
 

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Yeah...I had a shrimp disaster myself. I love watching them but since they are considered food, they aren't well taken care of in shipping. They are also the most sensitive to water conditions. I had perefect parameters but still lost one overnight and one a week later. Could not tell if betta had anything to do with their demise.
 

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I love duckweed in my betta tank. I just scoop out the excess anytime it starts blocking too much light from the plants below. Because it IS a serious invasive species, however, the three best ways to dispose of excess are:

1) Find a friend with pet goldfish. Duckweed is a nutritious and tasty snack for them. Best by far, IMO. (My secretary has goldfish at home so I just give her my excess in a little tupperware container, everyone is happy)

2) Find a fellow aquarist who is looking for some for their tank. (sometimes you get lucky, but not always, and this could require shipping so less desirable IMO); or

3) Put it in a safe container with water (I like my Pyrex glass measuring cup) and microwave the hell out of it for 5 minutes or so to kill it thoroughly. THEN toss it in your flower bed to decompose into plant fertilizer. You want to make sure there's no way runoff could carry live duckweed into a water system and cause problems in the local ecosystem.
 

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Discussion Starter #10
Well I am not a SE Asian rice paddy expert by any stretch. lol. But I like the idea of the duckweed in his tank. I am thinking that an environment like that would have a top cover plant like duckweed in it. It looks pretty to me also and every thing I am hearing it's an easy plant.
 
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