Duckweed

[Aqua Newbie]

Is there anyone willing to sell/share some duckweed?  I am a newbie and concerned about introducing pollutants/contaminants to my system.  Thanks in advance.

[Paul Trudeau]

Capital Aquarium used to sell it, but they are now closed - try other aquarium stores? I also used to be able to get it from these landscape irrigation drain basins around our condo complex, but I just went out and checked and none is growing there now.

[Richard Bunch]

There is a lot of duckweed in the canal just south of the intersection of Elk Grove Blvd and Franklin Blvd in Elk Gove.