Quote Originally Posted by DetroitAC View Post
No Walt, it clearly cavitates below about 0.6 GPM, this is a steady tone, same freq as rotation, probably rotor imbalance.

It's not very loud at all, but I would think it could excite other parts of a case to buzz. This happens with the stock top and my top, it's just a characteristic of the pump I think.
Curious what your plans are with this.
Are you going to mass produce it and sell it yourself or have a store sell it or what..
Let us know, because I think I'm up for a few