What is the name of this crystal? Put it in a fish tank for feng shui, okay?

You put the problem under the classification of flowers, birds, fish and insects, so don't talk about feng shui, just from the perspective of fish farming.

Putting this thing into water will not affect the water quality, but it is better to take off the coral bones next to it. The main chemical component of this thing is calcium carbonate, which will harden the water quality. The traffic light you keep is a kind of fish native to South America, which likes strong acid and soft water. Excellent water quality will affect its health, dull body color, slow action, serious growth and even death.

If the fish dies, I don't think Geely will go anywhere.