If it is a relatively large reservoir, there is a distance from the gate, which is not convenient for landfill. Might as well change the water, fill it with clear water, ask bricklayers to repair the edge of the pool, plant some flowers and trees, plant some stones, raise some koi fish, and make a landscape fish pond, which is beneficial to Feng Shui.
If you can't change the status quo, you have to write an article on your doorstep. Commonly used are hanging bead curtains, convex mirrors, and five emperors buried under the threshold. It is best to set up a porch at the door and cooperate with some utensils to fully resist evil spirits.