Feng Shui taboos for raising fish at home 1. A round fish tank, the five elements of which belong to water, can produce prosperous water, so it is auspicious. 2. The rectangular fish tank has five elements that belong to wood. Although it releases water, it can also be considered auspicious due to the help of emotions. 3. For a square fish tank, the five elements belong to earth, and earth can overcome water, showing the power of mutual restraint. Therefore, it is not suitable to choose a square fish tank with five elements belonging to earth. 4. The hexagonal fish tank has six as the number of water, so its five elements belong to water. However, the five elements of the polygonal fish tank belong to fire, and are mixed with water and fire, so it is not suitable to use this layout to attract wealth. 5. Triangular or octagonal fish tanks, the five elements of which belong to fire, become signs of mutual restraint when meeting water, so they are not suitable to be used. According to the above analysis of the five elements, the most auspicious shapes are rectangle and circle. You should pay more attention when choosing a fish tank.