What size hose to run

I have a 4000 psi at 4gpm. Belt drive I’m hooking up a 225 gallon tank this year, should I run 1 inch or 3/4 from tank to unit hose

1 inch

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not all hoses are the same, a good one will last a long time. I ran spa flex hose because I got it for free.

There are threads on this forum regarding buffer hoses.

I use spa hose aswell. Whatever you get make sure it’s non collapsible for your supply lines, the braided tubing won’t work