I have yet to hear, or figure out for that matter, how to prevent at least a little sediment from being disturbed. At least on initial startup. Elevating the diffuser is the best way to reduce it, but that even stirs things up some.

.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!!