| Mine flows about 500-600 gph through a 1inch overflow.
I have no doubt that the standpipe can handle some more flow than that. The internal box can't handle anymore in my case.
If you are worried that the pipe can't handle anymore flow, just cut a larger hole into the pipe where the water enters.
A smaller hole in the top of the stockman stand pipe (where the air enters) will result in lower water level in the overflow chamber.
A larger hole will raise the water level.
Mike |