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I think I have a duckweed problem in my 75g. I have duckweed in other tanks, but in my 75g they stay as seeds. Well either way, I need something that will skim the top of my water and collect seeds. I have never used a skimmer but would that work? what do I look for, need or buy?
 

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I just force the edge of an empty plastic container under the surface near the duckweed and it come flying into the container with the water. I dump it out into a net hanging over the edge of the tank to catch the dw and return the water. lather, rinse repeat.

Duckweed all gone in a 90g in 5 minutes. If you don't get every particle it comes back but it's slow and easy to repeat this several times a week if necessary.

Jim
 
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