Pond water should be tested regularly for irregularities. If parameters are out of the normal range, chemicals for ponds can be added to address the issues.
Clear pond water does not necessarily mean that the pond water is healthy, many factors such as pH, ammonia, nitrate, nitrites, and copper are generally invisible to the naked eye.
By testing the water regularly and adding chemicals to address these issues, most major problems can be avoided.
Water changes are essential to keeping a clean and healthy pond. However, treating the chlorinated water with a dechlorinator is essential as chlorine is harmful to fish.