... make the saturated ammounia, CO2, methane, sulfureted hydrogen, etc. go out of the water → the water quality improved. FunctionShrimp, eel, fish and ... and healthly and can be avoided to die because of lack of enough disssolved oxygen in the water, meantime, can ... saving, long durability and easy maintenanceC: Suitable for various farming of aquaculture products such as fish, shrimp, crab, etc.D: ...