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I screwed up and got the herpes (duckweed)


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Haha! Embrace the D-weed!!!

I’ve found that if you can net it off the surface daily for the first few weeks, you’ll manage it pretty well thereafter.

First, you could try moving your other floaters to a bucket of tank water, and hand pick out duckweed if there. Then go over the aquarium surface, and net it out there.

From that point, daily maintenance for 2x weeks.

But honestly... we embrace the stuff. It regulates parameters, calms fish by muting light, adds a snack for certain species, etc.

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On 6/16/2021 at 10:21 AM, Beau1990 said:

So I recently acquired a mix of floaters in an auction (frogbit, salvinia minima, red rootfloaters) and snuck in the bag was duckweed and now it's over taken my tank my question is how much of a nightmare is it to get all the duckweed out? I want to keep the other floaters. Or would it be easier to just take everything out?

When I noticed some creep in on my water lettuce, I went in and picked out every last leaf I could find floating on the surface by hand. I haven't seen any duckweed in 3 weeks since.

Be patient and persistent, and clear out any speck you can see. It'll take awhile.

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ahh duckweed... I have a love/hate relationship with it. It is a really good plant for shade and eating excess nutrients. I make fish food out of it, and also feed it to my goldfish in the pond outside. It sticks to everything, each time I put my arm in my 75 for maintenance or to move something, I get a half a pound of it stuck in my arm hairs lol. I have pretty much eliminated it in the tanks I didn't want it in, by doing what Fish Folk  and laritheloud did.
 

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Today, I found some duckweed in my plant 'quarantine' bucket. It probably came in with some dwarf hair grass that I got last week. Super happy I spotted it in there, since getting rid of it can be a pain. I've had an infestation years ago, and it took me months to properly get rid of it. As mentioned above, keep removing it daily as much as you can, and keep an eye on it. Eventually you will stop seeing it, but depending on your tank, it might be a while. All it takes is 1 small leaf to start it all over again.

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I had a duckweed infestation in my 45 bowfront, and I found that after netting the majority of it, I could use my python (or any gravel siphon really) angled upward to skim the surface and dispose of a good bit of the nasty pest plant. Every water change, I'd spend a good bit of time skimming the surface like that, and eventually I got the last stragglers after a month or so. Gives a good excuse to do water changes too lol

 

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On 6/16/2021 at 10:43 AM, Fish Folk said:

Haha! Embrace the D-weed!!!

I’ve found that if you can net it off the surface daily for the first few weeks, you’ll manage it pretty well thereafter.

First, you could try moving your other floaters to a bucket of tank water, and hand pick out duckweed if there. Then go over the aquarium surface, and net it out there.

From that point, daily maintenance for 2x weeks.

But honestly... we embrace the stuff. It regulates parameters, calms fish by muting light, adds a snack for certain species, etc.

Recently did a major clean out in some of my tanks that I have other floaters in (salvinia and dwarf water lettuce).  I took each of the good plants out, dunked them swished them until the area was clear and put them in another bucket.  Did this for a long long long time, then I used a powerhead and used it as a DIY skimmer and cleared out the rest of the duckweed.

Cant remember the video I saw it on, but here's one:

 

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  • 2 months later...
On 6/16/2021 at 7:51 PM, aquachris said:

Recently did a major clean out in some of my tanks that I have other floaters in (salvinia and dwarf water lettuce).  I took each of the good plants out, dunked them swished them until the area was clear and put them in another bucket.  Did this for a long long long time, then I used a powerhead and used it as a DIY skimmer and cleared out the rest of the duckweed.

Cant remember the video I saw it on, but here's one:

 

It looks neat but only if you don’t have fry or shrimp in the tank.  Well fry and shrimp youn want to keep alive that is.

I also would scoop out the bulk of the duck weed first then let this get whatever I missed. 

 

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I use an Odyssea Clean 100 Surface Skimmer where I enlarged the openings on the skimmer basket to suck up duckweed. A piece of quilt batting serves as a filter material and it cleans up the excess in short order. I then spend time picking out the snails and returning them to the tank, but the surface skimmer does a nice job of sucking in duckweed.

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On 9/13/2021 at 9:21 AM, ARMYVET said:

It looks neat but only if you don’t have fry or shrimp in the tank.  Well fry and shrimp youn want to keep alive that is.

I also would scoop out the bulk of the duck weed first then let this get whatever I missed. 

 

Yeah fry would be worrisome. With the shrimp I didn't have issue with, most stay away. I had one tank a few got in but they get stuck on the top. I just remove them and off they went to do shrimpy things

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I am fascinated by people not wanting duckweed. I'm not sure what the cause is, but it's really hard to find in Australia and maybe it doesn't thrive as much as it seems to in USA, but a handful of Duckweed cost's about $20 here and it never seems to go wild like it does everywhere else haha, i wish i could get duckweed to take over my tanks lol

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On 9/16/2021 at 12:12 PM, Arty Mars said:

I am fascinated by people not wanting duckweed. I'm not sure what the cause is, but it's really hard to find in Australia and maybe it doesn't thrive as much as it seems to in USA, but a handful of Duckweed cost's about $20 here and it never seems to go wild like it does everywhere else haha, i wish i could get duckweed to take over my tanks lol

I will sell you some and Ill do it cheaper....How about $15 a pound ....I have a few tons....where do you want it sent?😂

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  • 2 weeks later...

Here's a photo of my duckweed skimmer in action. (It's in the bottom right of the photo. It's the Odyssea 100 Surface Skimmer with the modified/widened openings for duckweed.) This tank (my 30 high) was covered in duckweed yesterday. Now most of it is gone. The skimmer had to be emptied three times so far, but it does a good job.

 

IMG_20210926_092346520_HDR.jpg

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