dewcon4414 Posted December 31, 2020 Share Posted December 31, 2020 Bob ... all that noise we hear here in the water when we get near the hard pan can be gray mud concentrate or fine black sand and metal flakes. That’s really something to listen to.... running the machine hot if you don’t hear it tells you you may have a lot of moved fluffy sand .... good sign when you hear it..... I just adjust the sensitivity but start to really pay attention.... much like when you start finding iron. 1 Link to comment Share on other sites More sharing options...
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