Ask the great god to see if the fish tank can be placed in the feng shui porch.

Yes, it can be, but are you sure you want to use a fish tank to stop evil spirits? Too much. It is not recommended to use a fish tank to melt evil spirits. Fish tanks are used to make money, and there are so many instruments to eliminate evil spirits. Moreover, not everyone or every family is suitable for keeping goldfish. It is naturally good to raise it, but the bad luck it brings is not comparable to that of the elevator.