Assertion: acid rain's ph | /r/HasProperty | checked for acidity
Facets:
value: regularly
type: DEGREE
Source sentences:
text: For the culture of the species, the pH of the water should be regularly checked for acidity, and the fish should be reared at optimal pH similar or better than the one in which the fish were brought (i.e. from a fish farm) in order to prevent metabolic stress and for the survival of the species in culture.