Duckweed is a great nitrifying plant. It looks unsightly so totally understandable why you want it out. Would you ever consider stocking 1 common carp or koi? They would demolish that stuff off permanently

Ive done the same thing in my pond, with one difference... I made a big "push net" from the black nylon construction netting you see on the sides of the road during construction projects. Put floats on the top of the netting and weights on the bottom. Then you get a couple guys on each end to drag it through the pond and corral the duckweed to one corner. It makes sucking it out 10 times faster. Only other thing i can add is that your having the duckweed because there is a problem with your water. Order yourself a pondvwater test kit and see where the problem is. Then you can start to add things to your water to actually correct the problem so weeds dont grow at all. Good job and good luck.

Well done.

Pretty nice setup! I'd suggest adding a skimmer top to your bucket so you can set the bucket an inch or two below the water and let the skimmer regulate the amount of water coming in, so your pump doesnt over-run the water. Like this... kzfaq.infoHeuY4HItgLc

Can you tell me: dn of pump 50mm or 80 ( 2 inch or 3 inch)