Ensure that your fish pond is clear, the water maintained at the correct levels and you have a happy home for your fish Having a pond is very soothing for the soul, but it can become hard work if not maintained. Keeping the quality of the water at its best condition, and your fish happy, is an all-year-round task (read on, don’t let this put you off having a pond.) You may not be overly concerned about the bottom of the fish pond, which is never really seen. However, when debris is given the chance to accumulate, the water quality and health of your fish are at risk. But what can you do about uneaten fish food, waterlogged leaves and plants, or even dead fish which could be decaying at the bottom of your pond?