Assertion: aquarium's water | /r/HasProperty | removed
Facets:
value: in order to have invertebrates
type: PURPOSE
value: in order to have healthy fish
type: PURPOSE
value: in order to have corals
type: PURPOSE
Source sentences:
text: Algae may be grown purposely, which removes chemicals from the water which need to be removed in order to have healthy fish, invertebrates and corals.