KC,
Over the years, the board has had a number of good discussions pertaining to pond/lake aeration. Lots of questions related to pumps, tubing, diffusers, setting depths, aeration effects etc. There is a whole "AERATION" topic that will give you lots of good info. If you don't see the answer to your specific question, post there (someone may not see your post here in "Questions and Observations)and I'm sure one of our experts will try to help. Welcome to Pond Boss, you've got a great looking place!
Russ