Assertion: aquarium's water | /r/HasProperty | changed in regular amounts
Facets:
value: at regular intervals
type: TEMPORAL
value: partially
type: DEGREE
Source sentences:
text: After the aquarium has established, aquarium water needs to be partially changed in regular amounts at regular intervals to keep water quality up and maintain safe levels of Ammonia, Nitrites, Nitrates, pH, General Hardness and Buffering Capacity.