Ensuring that your pond water is stable and healthy is an important facet of water garden care, particularly if the feature is stocked with fish or other aquatic wildlife. Barley straw and other products can reduce algae growth in the water, and adding a dye to it will keep the algae from growing back. Keeping the pH balanced and removing chlorine from tap water helps your fish stay healthy, and using a test kit regularly will help determine current pH, phosphate, and ammonia levels. As a pond's needs change each season, using a proper seasonal product will keep the water and life within the pond viable. Additional products made with enzymes and beneficial bacteria keep your pond clean and clear, while others aid in ridding the area of mosquito eggs. Keep the water in your pond healthy and clean with help from chemicals and beneficial bacteria.