It probably got in there from birds/ducks. Sometimes it stays on birds body as they check out bodies of water. Similar to how a lawn care business mower will transfer weed seeds stuck under the mower from one property to another. 😉😎 Also, you can look into getting some sterile carp in your pond, they love eating duckweed, and they don't reproduce.

We tried this last year too. We are setting up a pond aerator. We need to get oxygen in the bottom of the pond!

It is a symptom of a pond that is stagnant and in dire need of drained and cleaned out... then you need some water movement to keep it destratified... the bottom needs to be limed with pulverized limestone, and an aeration system with a few bottom diffuser's and / or mucked out with heavy equipment or a dredge. Other than that.. you're not going to win. It is a symptom and it's CAUSE needs fixed then the symptoms will go away... Do not waste time and money on the pond because you're only fighting Mother Nature that is trying to make land out of your pond... dig it out or dredge it out.. or let it go to turn in to a swamp, then bog, then wetlands, then woods... you can't win unless you get the dead organics that are causing the tannins in the water to lower the total alkalinity of your pond. Lime counters tannins... think about looking at it like it's either a swamp OR a quarry pond / lake, that's what you are dealing with on the alkalinity levels with the water at either end of the spectrum. If you test it, I bet you're gonna get a total alkalinity of WAY less than 20ppm... it needs to be like 50 bare minimum up all the way to or more than 200ppm. The leaves, grass, and other dead stuff that was once living is causing the low alkalinity when it is in the water leaching out the tannic acids when they lay on the bottom with no oxygen to let it rot and no water movement to let the gasses escape into the atmosphere... how's that for a fix. Fix it or don't ... but fighting it is ABSOLUTELY 💯 FUTILITY without some type of water alkalinity shift to a MUCH HIGHER LEVEL...

My pond has had this for years and we didn’t know it was watermeal. We actually killed a lot of our fish from so many chemicals we tried. Our pond is only about a half acre. I was just wondering if it grows back every year even after you skim it all off?

My pond is in the same boat. I’ve made a couple videos about it. We just installed an aeration system. I’m thinking of using chemicals next spring to help put a stop to the watermeal/duckweed. It’s a pain in the butt.

I was trying to watch this but gave me bad motion sickness. Sorry but you move too much .

To slow imo