There is a magic elixir to get rid of it. Feeder goldfish or rosy barbs will quickly rid a tank of duckweed. Fish most of it out by net, the fish will clean out the rest. I actually feed it to my tinfoil barbs. Supposedly an excellent fish food, high in protein. ------------------------------------------------------------------------- This is the apistogramma mailing list, apisto@listbox.com. For instructions on how to subscribe or unsubscribe or get help, email apisto-request@listbox.com. Search http://altavista.digital.com for "Apistogramma Mailing List Archives"!