Soothing Shrimp Posted April 28, 2015 Report Share Posted April 28, 2015 This floats on the surface of the water. The first pic is from underneath. The 2nd on the surface. As you can see it looks the same under as over with no roots and very small ~1mm each green circle. Any ideas? Quote Link to comment Share on other sites More sharing options...
mayphly Posted April 28, 2015 Report Share Posted April 28, 2015 Lol!! Looks like duckweed! Sent from my iPhone using Tapatalk Crazyfishlady 1 Quote Link to comment Share on other sites More sharing options...
Soothing Shrimp Posted April 28, 2015 Author Report Share Posted April 28, 2015 Nope. At least not the same type of duckweed I have in my other tanks. Here's my duckweed Quote Link to comment Share on other sites More sharing options...
Greenteam Posted April 28, 2015 Report Share Posted April 28, 2015 2 kinds of duckweed a large & small version you have both Quote Link to comment Share on other sites More sharing options...
Soothing Shrimp Posted April 28, 2015 Author Report Share Posted April 28, 2015 So that's small duckweed, eh? Looks kinda cool and grows way slower for me. Only one tank has it. Thanks guys. Quote Link to comment Share on other sites More sharing options...
revolutionhope Posted April 29, 2015 Report Share Posted April 29, 2015 I have something that looks just like this that is maybe approx 5mm I guess. someone told me its duckweed too. im not removing it atm while I have high nitrate.. once I got nitrate under control i plan to scoop it out and rely on some macropore to absorb excess nitrates. I think small floating stuff is too annoying when netting shrimps!I love n peace will Quote Link to comment Share on other sites More sharing options...
Soothing Shrimp Posted April 29, 2015 Author Report Share Posted April 29, 2015 I hate the larger duckweek in my other tanks. Looks pretty, but what a pain when netting shrimp or doing any maintenance. This smaller duckweed is in my Caridina thambipillai tank. It's a just for fun tank. Quote Link to comment Share on other sites More sharing options...
adrand Posted April 29, 2015 Report Share Posted April 29, 2015 This size duckweed is a thorn in my side. I tried keeping it only in one tank's sump for nitrate export but it quickly migrated to the main tank. It grows way to fast and blocks out light from the plants below it. I can never seem to completely remove it either. Always miss one piece that multiplies quickly and I'm back to square one. And come to find out I never really needed it for a long term nitrate export anyways as the tank is so heavily planted once it grew in. The tank is now nitrate deficient and i have to dose. If you like it all the more power to you though. Just be careful if you dont want it to spread to other tanks. It will migrate on tools and nets if shared between tanks. Soothing Shrimp and revolutionhope 2 Quote Link to comment Share on other sites More sharing options...
chibikaie Posted April 29, 2015 Report Share Posted April 29, 2015 The 1 mm size/first post is more likely to be Wolffia and the next size/second post Lemna minor (lesser duckweed). I think Wolffia is called water meal. Greater duckweed (Spirodela polyrhiza) is larger still (5 mm and up I think) and has a very shiny upper surface. Its leaves tend to grow in groups of 3 or 4 before budding off, unlike Lemna which seems to max out at 2. The underside develops to a purplish red in good conditions (iron and other trace nutrients). It grows more slowly and gets big enough that it's easier to corral. I like all duckweeds. They don't get tangled in my rooted plants, they don't flip over and die, they help keep fish from jumping, they are never carbon limited, they are undemanding about light, and they are great at exporting nitrogen. Even people who can't grow regular plants (ME) can grow duckweed (although I have been known to kill it). I know it's basically impossible to get rid of, but I like it. svetilda, revolutionhope, mayphly and 1 other 4 Quote Link to comment Share on other sites More sharing options...
Soothing Shrimp Posted April 30, 2015 Author Report Share Posted April 30, 2015 YES! That's it! Thank you chib! Here's a better image from google: sarah, mayphly and revolutionhope 3 Quote Link to comment Share on other sites More sharing options...
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