How to raise fish in the courtyard fish pond?

Don't put sand and mud, bare pool is the best, mud is difficult to clean, water is turbid, sand is easy to pile up garbage and not easy to filter.

There is also that flowers and plants should not be planted directly in the pool. It will be more beautiful to plant them around the pool.

All cement ponds should be soaked in water. Generally, the water should be drained after one month, washed again, drained and filtered 1 week before the fish can be released. Tiles can be soaked for a week.

Koi fish is the most ornamental pond keeper. I suggest you raise koi fish.