PI machines in freshwater

[greatwhite]

I've heard not to even try using a PI machine in freshwater.why?

 

[Mr.Bill]

For the most part, they do not discrimate. So using them in fresh water where iron & junk has been laying for hunderds of years, would cause you to give up on detecting. They are a "All Metal" locator.

 

[Old California]

Mr. Bill is right about allot of junk in fresh water lakes,

But in a few areas especially here on the West coast some lakes up in higher elevation have mineralized sand, Mainly in the fresh water area and further away from the shore as the sand starts to dry out the mineralization calms down.

One particular lake we detect we use our Pi's, Mainly the HH Pi's and a waterproof GoldQuest. We pick up finds missed by the Excalibur or any other VLF detector.

Because of the masking effect from the mineralization, The Excalibur & Sovereign or any other VLF detector are limited to about 4-5 inches in depth if that. Our Pi's punch a deep signal with such ease in the same lake, A big difference between a Pi and an VLF detector.

However, It takes a couple of years to clear out a lake area full of iron. But we did it and now iron signals are not anywhere near as before. Our finds ratio are so much higher now with very little iron targets each trip out, But it takes a couple of years of digging everything that eventually the area will be almost free of iron.

Paul (Ca)