Welcome, Ryan. I'm not a pond pro by any means, but it looks like what is called Filamentous Algae (FA around here). You'll typically see that in a pond that has plenty of excess nutrients that aren't being used up by other aquatic plants. It's a nasty nuisance that does make fishing a lot more challenging and it's just ugly.

While this does not address the root cause of the FA being present, you may have good luck with a copper based product such as Cutrine (available at most farm supply stores - Southern States, Tractor Supply, Rural King, etc). Spray it on or sprinkle it on (with the granular option) and in fairly short order it will start to die and sink. T?he trouble is that it will rot on the bottom of the pond and simply add to the organic load in the water and will eventually come back. Manual removal is often the most effective method, but it's a lot of hard work even with some of the fairly simply tools and techniques you'll find here on the forum.

Again, your bigger issue is figuring out why you are getting FA and trying to address that problem. Given the nice looking setting you have there, it's conceivable that some of the neighbors use fertilizer on their yards. That is probably washing into the pond and creating a heavy nutrient load that will encourage growth of FA. Just one point to illustrate what I mean by the root cause.

Again, I'm no expert. These are just things I've learned in reading the forum over the years but there are plenty of professional biologists and pond managers here who will be able to offer you solid advice. In the meantime, start searching the forum for posts about FA. There's a ton here and a ton you'll learn on your own so you can understand what is going on and what questions you need to be asking.


Todd La Neve

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1.5 & .5 ac ponds - LMB, BG, RES, YP, GC, HSB