Alabaster and Lloyd (1980) identified the pH range that is not directly lethal to freshwater fish as. 5.0-9.0. With few exceptions, pH values between 6.5 and 9.0 are satisfactory, on a long-term. basis, for fish and other freshwater aquatic life.
Benefits Of Papaya Seeds. 1  Improves liver health. 2  Boosts kidney health. 3  Destroys internal parasites. 4  Acts as a natural contraceptive. 5  Aids digestion.
Inside the inner cavity of the fruit are black, round seeds encased in a gelatinous-like substance. Papaya's seeds are edible, although their peppery flavor is somewhat bitter. The fruit, as well as the other parts of the papaya tree, contain papain, an enzyme that helps digest proteins. This enzyme is especially concentrated in the fruit when it is unripe. Papain is extracted to make digestive enzyme dietary supplements and is also used as an ingredient in some chewing gums.