Stan, much depends on whether tilapia will remove "your" pond's muck...is it organic first off (detritus...leaves, fish poop, etc)?? If it is silt, nothing but mechanical removal will work. If organic, tilapia in the right stocking rates for the goal can and usually will remove many inches to feet in a single season, but as said in the beginning, "it depends"... on several factors that may never be predictable or even readily identifiable.

Last edited by Rainman; 03/21/13 07:59 PM.