1·改白天注水为夜晚注水正常情况下,夜晚给鱼注水,特别是凌晨3~4点注水,可提高池水的溶氧量,改善水质,避免鱼缺氧浮头,对防止泛塘和病害有明显效果。2·改吸深层水为浅层水鱼池加注新水时,通常将吸水管入水1米以上,吸注的是深层水这种水有机质含量高,溶氧量及水温低,不利于鱼? 1 · Change daytime watering to nighttime waterflooding Normally, watering fish at night, especially at 3am to 4am, can increase the dissolved oxygen of the pool water, improve the water quality and avoid the fish’s lack of oxygen floating head, Obvious effect. 2. Re-absorption of deep water When adding fresh water to shallow aquatic fish ponds, the water-absorbing pipe is usually immersed in water for more than 1 m. The water is deeply absorbed. The water has high organic matter content and low dissolved oxygen and water temperature, which is unfavorable to fish.