I sunk a bucket and pvc pipe (crappie condo) and can't see it but can see the fish. Is there an adjustment on the livescope you can use to adjust the screen to see the crappie condo??? Someone suggested putting metal in pipes before sinking.
trapped air in pvc show up well , It will also show up better as algae grows on it. Turn up your gain, PVC does not show up as well as brush but it is not invisible as some folks think.
