Assertion: ammonia | /r/HasProperty | tested in tank
Facets:
value: least once a week
type: TEMPORAL
Source sentences:
text: Ammonia should be tested every 10 to 14 days in ponds, and at least once a week in tanks.
text: If stocking densities are high, ammonia should be tested every 10 to 14 days in ponds, and at least once a week in tanks.