The reason of keeping bowl lotus is unlucky.
In geomantic omen, it is unlucky to keep a bowl of lotus flowers at home. Lotus belongs to the sacred flower of Buddhism, and there are many turbid things at home. Putting it at home will pollute the Buddha, and this bowl of lotus is homophonic with elegiac couplet, which is unlucky. So raising a bowl of lotus at home will increase bad luck.
Bowl lotus at home will not have the effect of gathering wealth. Some people compare dew to wealth. Lotus leaves are exposed all night, and when the wind blows gently, they will be blown away, which has no effect of gathering wealth. The lotus seeds in the bowl lotus are bitter in heart, indicating bad karma.
Bowl lotus is not suitable for raising at home because of its heavy yin. If placed indoors, it is easy to get cloudy and affect the family's wealth. Therefore, people who pay more attention to Feng Shui will not plant bowls of lotus in the yard.