Herbie overflow tuning

[The Guy]

Originally Posted by subman

once you find the sweet spot it should be good. I find I need to open it fully once a month and flush it out.

I find when your sock filter starts to get dirty it ups the level in the overflow, change the sock for a clean one and it's all good. Agree with the sweet spot comment. Also make your adjustments small and like was mentioned wait 30 mins. to see where you end up.