What is the best way to get more oxygen in ponds for fish?

1. Increase water movement. The more water movement there is, the more oxygen will be absorbed into the water from the air. This can be accomplished by using a fountain, water pump, or aerator. 2. Add plants. Plants produce oxygen through photosynthesis, so adding them to your pond will help to increase the oxygen levels. Some good choices for pond plants include water lilies, lotus, and cattails. 3. Reduce the amount of organic matter in the pond. Organic matter, such as decaying leaves and food particles, can consume oxygen as it decomposes. To reduce the amount of organic matter in your pond, regularly remove debris and clean the filter. 4. Avoid overcrowding the pond. Overcrowding can lead to low oxygen levels, as there will be too many fish competing for a limited amount of oxygen. A good rule of thumb is to have no more than 1 inch of fish per gallon of water. 5. Use an oxygen supplement. If the oxygen levels in your pond are still too low, you can use an oxygen supplement. Oxygen supplements are available in liquid, tablet, or granular form.