Very good post Ted! By requesting this information on not only circulation rates but the Oxygen Transfer Rates, Standard Aeration Efficiency, Standard Head Loss (back pressure) all suggest that you are dealing with a company that prides itself on continually improving their product and ensuring that their customers are receiving the best piece of equipment on the market today. It also allows the customer to make an informed decision with real numbers and not just smoke and mirrors. We can provide these numbers for any customer that request them.