Properly tuned sluice

[No gold in NY]

When I run my Keene A-52 sluice, I see sands and garnet migrating upstream between the riffles. Is this a good thing?

 

[nh.nugget]

For the conditions and gold, mine is tuned just fine. Like you guys say let the river pick your equipment. At the end of the day I've run all the dirt I care to run.

 

[calsierra-Dan]

https://youtu.be/UmODPW5D2G0, a couple different kinds of matting i use in my a52 here in ca! all work well , i like the factory carpet & Raised expanded metal works well ,but never hurts to try different stuff!