Oxygen supply for the garden pond. Provides immediate and effective oxygen against oxygen deficiency. Immediately improves the living conditions of pond inhabitants. Keeps the pond crystal clear without unpleasant odors. Breathing and natural decomposition processes in the pond continuously consume oxygen. Under special conditions, such as high heat or the decomposition of a large amount of organic material, acute and potentially life-threatening oxygen deficiency can occur. Sera pond O2 plus delivers immediate and effective oxygen, thus eliminating the deficiency. The living conditions of pond inhabitants are improved right away. Furthermore, decomposition processes occur more effectively with good oxygen supply - the pond remains crystal clear without unpleasant odors.