VOL,

Your thinking is exactly what I have observed also. My circulation and subsequent effectiveness of the skimmers, is reduced by redirecting the return flow up into the spray.

My "device" unscrews pretty easy, so I take the sprayer off around 6:00pm and circulate the water normally for a couple of hours. The cooler ends up not quite being "free" to operate because I run my pump a little longer. For me, it's a small price.......water has yet to exceed 84 degrees.