Quote:
Originally Posted by heykarinakarina
I've heard of putting a brick in the water tank to fill space so the tank fills with less water. Problem is that bricks errode and would need to be put in something that will make it safe to be inside the tank.
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Try using an empty plastic milk bottle filled with water to make it heavy.
It displaces water from the tank so that your cistern will use less water to fill.
