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
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.
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.
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.
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.
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
Eheim Hater Member # 39 72 Gallon All Glass Aquarium and Stand with Glass top, Eheim 2126 Pro II Thermo Canister Filter, Pressurized Co2, 260watt Coralife Lunar Lights, 100% Eco-Complete 10 Gallon Breeder tank with a Marineland 170 power filter with sponge filter attached and Marineland 100(?) heater 6 Gallon Marineland Eclipse 6, Semi heavily planted community tank