brand and pitch of this impeller?

[kepler]

There's a stamp up there, but not sure. Thanks

 

[xXx Octane xXx]

That's a Nu-jet.
You'll have to look at the hub of the impeller through the back side of the pump with a telescopic mirror and flashlight to find the specific model.
My guess is it's a YM-A5.0

 

[kevbo]

Your grate bolts are too long. The pump will vibrate horribly when they protrude into the inlet.

 

[kepler]

Ok thanks, hopefully getting a much different feel on the hooker I just got.

Kev, thanks for the side note, haven't noticed any vibration, but I'll change em. Also wondering if that tattered edge is causing lack of efficiency.