Excuse me, how can I find the leaking place in the fish pond?

In clean water, pour a little ink, and then observe the water flow (if the hole is large), you should find the water leakage point soon. If the hole is small, wait until the water is almost dry. Look at the bottom of the pool. The deepest color (ink color) is water leakage. Or don't look for leaks, just waterproof the whole pool.