... . In the early spring before pool water, agents with a 1--2kg per acre plus 20kg of water ... death..B. Processing of water Usually use 1kg agent with 20kg of water per acre every 15 to 30 ... be used after shaking. c. Can’t be used with antibiotics and fungicides, if they have been used, please ... Hot summer weather, pay attention to the proper aeration tank, and with the use of agents, the effect is more. f ...