Sluice questions, water flow and riffles

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Greenie
Oct 6, 2024
15
14
I'm building my own recirculating sluice/highbanker setup. It's 26" long 4.5" wide. The expanded metal I'm using is from a local welding shop they had laying around.
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My first question is whether the riffles are too big?
Second question is around water flow. I have a bilge pump I wired in to a power supply so I can run off an outlet. The label says 600 Gph. When its running it seems like good flow but hard to guage. Too much or too little?


I'm building this as cheap as I can so excuse the wood and overall jankiness. I'm running essentially dirt just to test the system out. I plan to build a hopper above like a typical highbanker which would help I think.

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