I would move the W diffuser down so it is a little further down and below straight between the o - oo. Then move the upper O to almost or mid-way where the W was located ( 1/2way between where the W and O is proposed). I don't think a diffuser in front of the dock is needed and will be wasting needed circulation in 8ac (within 80ft of the dock is too close to your dock - IMO). For your goal, you want deep water circulation, not shallow water circulation. What is the distance from the dock to the upper(north) shore? The O should be above mid-way between distance of the width. In 39F water, this should push water to the north shore with the help of o & oo. When W and WW are working in winter each should push water 200ft from my experience and temp-DO measurements.
Last edited by Bill Cody; 08/21/17 01:19 PM.
