What size holes for spray heads

[wingmaster]

I'm setting up my keene A51 sluice to run some dirt at home and was wondering what size holes I should put in the spray heads, as I'll be running two pumps to assure I'll have enough water flow and I'm using bilge pumps in case I want to run some by the creek when theres not enough flow. One of the bilge pumps is a 1250 GPH pump hooked up to a 1" PVC pipe, the other is a 750 GPH hooked up to a 3/4" PVC pipe, I want to make sure they have full flow as to not put any back pressure against the pump. I have valve's on both to adjust the flow if necessary though but I know not enough holes and I won't get full flow and to many and I'll have more water on one end and not enough on the other. My sluice is only 10" wide so my holes will be limited to that 10" span. Thanks for any help and hope you have lots of color in your pan

 

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[russau]

3/16 inch holes for your at home device! but youll need to make sure that all the debris is filtered/cleaned out or itll plug your pumps!