G'day guys. Interesting thread. I've been planning to install an aeration system on my own pond. Now, having seen this thread I am considering using the irrigation pump already installed at the edge of the water (used to water my animals and lawn areas arround the property). If I install a T-section and stop-cock from the main line complete with an electric solenoid timer and run this line back into the circular pond (weighted to the bottom and angled either verticularly or at 45degrees)WILL/SHOULD it aerate the pond and prevent stratification????? Would 8hrs per day be enough? How can I test DO levels? Pond is 1/4 acre and 15feet deep.