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Duckweed in pond
I should probably try the ponds group, but I don't subscribe to it so I
thought I'd try here first. We have a pond, slightly less than 1/4 acre, which has a serious duckweed infestation issue. Last year when we took over the property, it looked like a golf green. This year we put in a floating fountain, but the duckweed is still fighting hard, which sometimes clogs the fountain. I fear by fall it will be about as bad as last year. Pulling the stuff out manually is like draining the ocean with a shotglass. So I fear I'll have to resort to chemical means. So my questions: 1) In doing surfing, it seems that Sonar is the chemical to use, but it's $$$EXPENSIVE$$$ (I actually saw it for $1900 a gallon!) Second choice is Reward, which is still expensive but more like $100 a gallon. Anyone have any experience with this stuff? Does it work? 2) If I *do* chemically treat with Reward, will I have to do it every year? Or will tackling the problem this year (or a few years) get rid of it for the most part? Surfing for info on ponds is difficult, since most postings consider "ponds" to be like 500 gallons, and ours is much larger. Thanks! -Tim |
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