The fish tank in the bedroom of Feng Shui knowledge should be placed in a suitable position, not lower than people's knees, which will form foot water and affect wealth. Of course, it should not be too high and affect human safety. For decorative purposes, it can be placed in a moderate position.
The size of the fish tank in the bedroom is determined according to the number of fish, and the number can be determined according to the owner's preference. The size of the fish tank is moderate. If there are too many fish in the fish tank, a lot of oxygen will be used in the water, and the fish will often die, which is unlucky. There are too many fish in the fish tank, which is too empty and monotonous, and has a lonely influence on people's psychology.
Don't put the fish tank too high, usually not higher than the human heart. According to the traditional geomantic omen in China, the position of the heart is the key to the human body, which belongs to fire, and the fish tank belongs to water, which can restrain fire. If the fish tank is higher than the heart, it will do great harm to the human body.