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.
The black seeds are edible but bitter peppery flavor. Most parts of papaya has enzyme that assists in digesting proteins. It is called papain, concentrated specifically in unripe fruit. It is commercially extracted for making digestive enzyme dietary supplement proven to have benefits in digestion. Papain is a whitish juice, an enzyme that breaks up protein.