bc,
A Kasco aerator can make a display feature. For example the 3/4 hr makes a 5 ft high 8 ft wide spray pattern and cost about $1,100. However if you buy it without the capabilites to make the spray pattern just a churn of water it is $200 less and the pounds of oxygen/hour goes way up. In other words it is better for preventing a fish kill and it cost less. Having said that I sell more of the display aerators b/c folks like the way it looks. It's your choice.
