Post, since you have approx 3.6-3.8 CFM available at 10 psi if you have the Gast pump I think you do, Try putting a shallow diffuser ($15.00 airstone) off to the side in 2-3 feet of water just incase you do want to winter aerate at some point. Then put 2-3 PSI to it and let the remainder exhaust to the air. Winter aeration is VERY over rated if you arent able to monitor your temp and DO throughout the entire pond and most of us dont.The rule of thumb I use and it is just that is for northern ponds that are ice covered and clear or not snow covered and that is to leave them alone you have plenty of DO and a nice warm pond bottom. If you have a mature pond and are on a muck reduction program (1-3 turns per day) you may want to open an ice covered SNOW covered pond once a month just long enough to refreeze an area of clear.(This is strictly a guess) This may only be a 2 ft hole with water that melts 10 ft of snow.If the air temp is below 30-35 F wait until it warms some. Perhaps the snow will melt off on its own and circulating the pond will not be needed.Keep in mind that while you are circulating the water on an ice covered pond that the warmer bottom is being pushed up to the 33F water below the ice and this is why if you are going to do this doing it off to an extreme side is less riskier. I only started my winter aerator in one pond once this winter, Mother nature did a good job. Too many Aeration Companies tout the benefits of winter aeration that know nothing about your pond and situation but have a system you cant do without.The expelling of "harmful gasses" is also more of a scare tactic I feel. .Cecil understands his ponds and what to do when. Follow some of the leads on this site and your fish will be healthier for it. I wish more folks would question the claims and benefits of aeration systems and especially winter aeration. This site should make us all more informed.That way we can have a few less of Daves(experiments) I also want to REPEAT the consideration on starting up your aeration in the spring. As Bill C has pointed out many times, winter is a very tough time on our fish. You may not want to just pick a day in the spring to flip the aeration back on but perhaps "ease" back into it.Many aeration systems today are very powerful and can turn a pond over several times per day. Sorry for the long post and repeating what has been stated many times and most know already. Ted