Spraying povidone iodine solution in the whole pool has good disinfection and sterilization effect, is safe and efficient, inhibits harmful microorganisms in water and improves water environment; When in use, dilute it with water 150-250 times, and spray it all over the pool: use this product 40- 100g per mu per meter of water depth, and spray it evenly. In severe cases, it can be used for 2-3 times.