It is common practice to check fish ponds here in the South to insure that
the pH isn't too low. I add tons of lime to my 3 acre pond every few years.
It takes a lot of lime to show any appreciable rise in pH and some people
says it is an exercise in futility.
I hear only one or two bullfrogs (Rana catesbelana)every year. Fifty years
ago we could harvest enough for a meal. Nowadays, frog gigs, a commonly
sold hardware/sporting good store item, are hard to find.
I have always suspected that surfactants/detergents/wetting agents/surface
tension depressants/emulsifiers inadvertently left on eating implements,
dishes and cookware are involved somehow in causing coronary artery disease
in humans. They are powerful reagents and just don't belong in a living
organism; except for those that the organism's body makes for a specific
purpose.
Doc Lisenby