This is a difficult question to answer, the phrase “how long is a piece of string” comes to mind as there are a number of factors that come into play regarding the length of time it will take to clean a pond. Typically we have completed well over 90% of full pond clean outs within a single day but occasionally we will have to allow extra time and days if the pond is overly large or complex. The longest a pond has taken us to clean was across 4 days, this was due to the shear size and volume of water the pond held, the mass of debris that had accumulated at the bottom from the over hanging trees and the fact the pond was completely flat bottomed meaning there was not a deep spot where the water and debris wanted to naturally pool into so hoovering and rinsing was tricky but we got there in the end.