Hi everyone, we have a large pond in our front yard, dug 30+ years ago when the house was built. The pond is earth bottomed and fills with the water level in the surrounding canals. A few years ago we had several huge carp (3-4 feet long) that did a great job of keeping the pond clean. They came with the house. After a number of hurricanes and floods we've lost all of them and the pond has been completely overrun. There are tons of fish of all kinds in it now. Here are some pictures that you can see how bad it's gotten. If you could ID this crud that's overgrowing and suggest some sort of treatment I'd appreciate it. I was also thinking of adding a few koi fish in it but am not 100% on that. I don't think the other fish that are in it now have a large enough mouth to eat the koi and hopefully they'd start munching on this algae / grass.







