About two days before the water change, you should fill large containers such as ice cream or margarine tubs with tap water, and allow the water to stand so that the contaminants leach out into the air.
(you; should fill; large containers such as ice cream or margarine tubs with tap water; T:About two days before the water change) (the contaminants; leach out; into the air) (you; allow; the water to stand so that the contaminants leach out into the air) Context(you allow,List([40, 134))):(the water; to stand; so that the contaminants leach out into the air)
you allow,List([40, 134))
you the contaminants you the water
should fill leach out allow to stand
large containers such as ice cream or margarine tubs with tap water T:About two days before the water change
into the air
the water to stand so that the contaminants leach out into the air
so that the contaminants leach out into the air