I believe that the presence of amphibians like frogs at the very least indicate good water quality (non toxic). That doesn't mean the BOW won't be plagued by other issues, like FA or be too shallow. But my pond has proven that once a predator species of fish is established, the 'frog days' of summer are done.

"He who thinks he can and he thinks he can't, they're both usually right." - Wyatt Hendrickson, 2025 NCAA Hwt Champion