Let the jury decide

[Guest5431]

I

 

[GaryE]

You bought duckweed? It's like buying rats with bubonic plague. I throw away pounds of that stuff every month, and yet, it always manages to mess things up.

That looks like the usual mix of duckweed sizes. It can grow long roots if the nitrate levels in the tanks are low. It makes itself ugly in different ways depending on lighting and nutrient load. It also doesn't provide good fry cover, as livebearer fry don't sit right under the surface enough for it to work. Give it up as a bad job and get guppy grass or hornwort, with more complex structures. That is, if you can give it up. One tiny leftover piece and it's off and running again.

 

[Magnum Man]

I deal a lot with Giant Duckweed ( Spirodela polyrhiza ), and the baby plants do look a lot like Common Duckweed ( Lemna Minor ) but in my experience, it would be challenging to separate the babies from the mother plants, it just would not be worth the extra work, so your sample should have both mothers and babies in it... they don't look like aquarium propagated plants, looks to me, more like a scoop out of a pond, & what you get, you get... the good news, is you may also be happy with some of the plants that are mixed in, as they grow... the bad news is, you are more likely to get pests, and it can be really hard to separate the plants, until they mature more, and even then, near impossible to get any Lemna Minor out...

I inherited some water meal ( that is even smaller than Lemna Minor ), in with some Asian Watermoss

 

[MaloK]

Scale bars represent 5 mm