heartlander, Winter aeration will depend on several things, some listed below. Can you tolerate thin unsafe ice, what is your demand for DO in the winter months,high OM ponds may be candidates for winter aeration. Any problems in the past? Do you have stricly warm water fish, probably yes then try to keep the deeper areas above 39F and some aeration can send small ponds colder than that quickly.If no ice then in older ponds I still prefer to circulate in a shallow area "IF" Im not sure of the DO level. If your going to add beneficial bacteria when the water warms up see note to loretta.
