how does duckweed multiply? - Betta Fish and Betta Fish Care
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post #1 of 13 (permalink) Old 07-06-2013, 05:09 PM Thread Starter
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how does duckweed multiply?

I had like, 2 pieces of duckweed come in with some other plants I bought. It's cute that they're like tiny leaves with tiny roots attached. But it definitely has multiplied slowly because I see random pieces here and there around my tank... so how does it multiply? They just look like individual leaves with roots? Just curious.


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post #2 of 13 (permalink) Old 07-06-2013, 05:50 PM
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Not sure how it multiplies but mine grows back SUPER fast! I took about half of it out of my 10 gallon tank and within a week the entire surface of the tank was covered again. Duckweed has one single root and one leaf whereas there is a similar looking floating plant with larger "leaves" and has more than one root attached to each piece (I forget what it's called but I have both)

*Edit* The similar plant is called Salvinia

10 gallon planted - HMDT male betta, 4 peppered corys, assassin snails, Amano shrimp
10 gallon divided bare bottom - HMPK male, 2 VT males
29 gallon sorority planted [journal] - 6 females, 4 bronze corys, trumpet & nerite snails, 3 Amano shrimp

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post #3 of 13 (permalink) Old 07-06-2013, 07:35 PM
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Duckweed will soon take over your tank surface. One day you have two itty, bitty leaves and the next an explosion!

I'm slowly eradicating mine as it gets in the cracks of the driftwood, deprives other plants of light and, worse, gets all over the internal filter. It is even trying to choke out my Red Root Floaters because I got lazy about removing it.

I posted a thread a while back on how to contain floating plants to one area of my tanks and got some really creative ideas.

I agree, it's really cute, though. ^smile^

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post #4 of 13 (permalink) Old 07-06-2013, 08:01 PM Thread Starter
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The weird thing is that I didn't see the first tiny cluster until 3 weeks after I got the plant that I think it came with. That was about 3 months ago and I've only seen about 6 additional small clusters since then.


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post #5 of 13 (permalink) Old 07-06-2013, 11:28 PM
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I harvest mine once a week. By the next harvesting time, it's covering the entire surface of the water again. I don't mind it, and my shrimp love to skitter upside down through the roots.
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post #6 of 13 (permalink) Old 07-07-2013, 12:33 AM
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We bought some duckweed with our first order of plants. I put it into a few tanks and decided I didn't like it. Removed it from all of them. A few months later it exploded in one tank - no idea where it came from since i did get it all out, I thought. Now it's in every tank in the house.

I have a bunch of various floaters - duckweed, greater duckweed (beautiful and better than small duckweed), frogbit, salvinia, antler fern and 1 piece of dwarf water lettuce that I hope spreads. With the exception of the small duckweed I really love all the floaters.
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post #7 of 13 (permalink) Old 07-07-2013, 12:43 AM
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i tend to that they clone themselves. the minor species make little butterfly shspes before breaking off.
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post #8 of 13 (permalink) Old 07-07-2013, 01:44 AM
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they reproduce asexually by budding.

one of the examples used my biology exam along with hydra. ^^
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post #9 of 13 (permalink) Old 07-07-2013, 01:59 AM
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They are like the aids of this hobby. There is no way to get rid of them! I added a tiny bit to ONE of my tanks 7 months ago, regretted it in 2 weeks, and removed them all. 7 months later, they are in every one of my 9 tanks.
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post #10 of 13 (permalink) Old 07-07-2013, 07:17 AM
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Yeah it's not easy to get rid of. It clogs my filter almost every day in the new sorority tank beacuse some of it gets caught in the big current and then gets sucked into and stuck in the intake.

10 gallon planted - HMDT male betta, 4 peppered corys, assassin snails, Amano shrimp
10 gallon divided bare bottom - HMPK male, 2 VT males
29 gallon sorority planted [journal] - 6 females, 4 bronze corys, trumpet & nerite snails, 3 Amano shrimp
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