Pond Boss Forums AERATION Systems questions Good choices for D.O. meter

I agree with Cecil. I foresee very few instances where you would need a quality DO meter in a pond such as yours. You can monitor how well the diffused aerator is mixing the water column by simply measuring the temperature at 1 or 2 ft increments top to bottom. Airguide used to sell a good temp gauge with a 20ft probe sensor for around $20.00. Not sure if they still sell that unit but someone not doubt currently does have a similar style.