Water quality is one of the most overlooked aspects of pond management Clay turbidity in ponds is one of the most common quality issue several other variables influence water quality for fish including water temperature, phytoplankton, photosynthesis and pH, carbon dioxide, alkalinity and hardness. Additionally, water quality can be affected through the interaction of these factors. Water quality is vital in ensuring healthy plant and animal life in a pond. There are two components to water quality. One is the actual chemical make up of the water including pH, alkalinity, hardness, ammonia, nitrite, nitrate, and chemical additives, or impurities. While plants are less sensitive to chemicals than fish, it is still a good idea to keep the water in plant-only ponds that only contain plants as clean as possible.