I was hoping that by elevating my diffusers they would create the same conditions you have Tracy, but it didn't. I didn't use the plate they provided as was kind of flimsy, and that may be why. The platform of milk crates allows water to be drawn up from below without anything there to block it. Even 22" up they still turn the whole pond over.

Think I'll find something to mount under the diffusers and see if that helps. Preferably something that won't try to float.

Tom,
I've been considering something along those lines too. Just don't know if I want to see big pink sheets floating on the pond. It's right outside the front door. Maybe some kind of floating island tho.

.10 surface acre pond, 10.5 foot deep. SW LA. The epitome of a mutt pond. BG, LMB, GSF, RES, BH, Warmouth, Longear Sunfish, Gambusia,Mud Minnows, Crappie, and now shiners!!...I subscribe!!