Cavitation on 100,000 GPM pump.
Fullsize image: https://s3-us-west-1.amazonaws.com/h...p_fullsize.jpg
https://s3-us-west-1.amazonaws.com/h...large_pump.jpg
Previously:
https://www.homemadetools.net/forum/...200#post134729
https://www.homemadetools.net/forum/...252#post130765
https://www.homemadetools.net/forum/...463#post131853
https://www.homemadetools.net/forum/...269#post130848