How do you get rid of duckweed?
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Old 11-13-2005, 05:48 AM   #1
jread
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How do you get rid of duckweed?


A few pieces of duckweed got in one of my tanks one time and it's been a nuisance ever since (over a year). It is now in all three of my tanks and I cannot get rid of it no matter what I do. It clogs filters, covers the surface (to the point of choking the aquarium of air), etc. I have to remove it from my filter intakes whenever possible or it will nearly stop the flow.

When I setup my new tank, I will destroy anything or anyone who puts a single leaf of duckweed in it
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Old 11-13-2005, 07:17 AM   #2
ValorG
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just scoop all of it out with a fish net, and every week during ur water changes scoop out more that survive. eventually none will be left.
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Old 11-13-2005, 07:45 AM   #3
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Many of us know what a problem it can cause

I think I got rid of my problem a few weeks ago. At least I hope I did. All you can do is to scoop it out everyday with a net. Not once a week EVERYDAY!!! Until you have gotten rid of it.

If you wait to do it at water changes some little bits will always be pushed down into your plants and hide for hours and days then they will surface and multiply like they were charged with everready batteries, or am I thinking of rabbits!!!

If you see just one take it out because if you don't by weeks end you will have several dozen.

I hope I stressed the importance of cleaning the surface daily.
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Old 11-13-2005, 07:58 AM   #4
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Once upon a time I was running my medium light tank nitrate (and others) poor and I could not get duckweed to grow...

Same thing happed to my angel fish breeder. Very little duckweed until I added liquifry...

There is a "dwarf duckweed" Lemna arrhiza out there too.
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Old 11-13-2005, 04:50 PM   #5
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There's a couple of pointers here also:http://www.plantedtank.net/forums/sh...light=duckweed.
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Old 11-13-2005, 09:07 PM   #6
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After the initial netting out of ALL leaves you can find, just spend 5 minutes on the following 4 or 5 days to scoop out any leaves that were hiding the previous day. Not a big deal really. Like 'phish said.
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Old 11-13-2005, 10:21 PM   #7
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Default duckweed

Common Austrailian Rainbows will eat it like its candy...Jim
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Old 11-14-2005, 04:30 PM   #8
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I believe Flag Fish with eat it as well.

I actually like having duckweed, but I have a lower tech tank and it doesn't cause me any problems.

~Brian
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Old 11-14-2005, 05:24 PM   #9
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Quote:
Originally Posted by jimjim
Common Austrailian Rainbows will eat it like its candy...Jim
i have puntius denisonii who also chomp on mouthfuls of it.
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Old 11-15-2005, 12:24 AM   #10
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I hope it's OK. Rex made one: http://www.plantgeek.net/forum/viewtopic.php?t=704
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Old 11-15-2005, 12:34 AM   #11
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Seems like a lot of work and a pretty big rig just to get rid of duckweed.

I take a small plastic container, like a yogurt container, and push the bottom of the container into the water and let the water just slightly skim into the rim of the container. As the water skims in, so does the duckweed! I just pour the container full of water and duckweed through a fishnet. Simple as that.

You can sink the container near the edges and corners of the aquarium and collect duckweed much better than you could with a net. You'll find it may take a wee bit more time, but it is a much more thorough method and it eliminates duckweed much faster.

It is cheap, and easy. Give it a try!

Mike
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Old 11-15-2005, 01:04 AM   #12
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Use a net and then a shop vac with a computer cleaning wand. Works like a champ. But you have to be persistent.
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Old 11-15-2005, 03:03 AM   #13
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Quote:
Use a net and then a shop vac with a computer cleaning wand.
POWER TOOLS! Of course!

Mike
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Old 11-15-2005, 09:52 PM   #14
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You can get couple of giant danios(starter fish, very cheap), which will eat the duckweed in no time. I have 7 in a 150 gallon tank and I dump all the duckweed from my 30 and 15 gallon in there. It takes them couple of hours to finish it.
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Old 11-16-2005, 01:29 AM   #15
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Are you sureeeeeeeeeeeee you want to get rid of your duckweed?.. They are Beautiful when they over run your tank... ~~~ Loooook pretttyyyy duckweed~~ O_O
That's the top of my tank when I had duckweed... The trick to duckweed is to scoop it away with a fish net or a brine shrimp net... But they are prettttyyyyyy.. =D
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