date:Jun 15, 2016
low 30 mu with rich water resources, but the water supply and drainage are basically relied on water pumps. Aerobic equipment is insufficient. There is only one aerobic equipment in average of more than 10 mu farming ponds; high organic matter content in the water, ammonia nitrogen and nitrite out of limits, low dissolved oxygen and fish gasping for air are the main problems. Disease broke out frequently in recent few years, which is directly linked to the bad quality and change of water.
Mixed