Traditional Culture Encyclopedia - Hotel accommodation - What happened to the fish in the hotel fish pond?

What happened to the fish in the hotel fish pond?

Replacing all the water in the pool is water mold. If there is no disinfectant such as potassium permanganate, sprinkle salt into the water to soak it, then replace all the water, inject new water and release the fish. It is troublesome to treat sick fish quickly or not. It is necessary to change some water regularly, and sprinkle a small amount of salt when changing water.