reroute the hose with a loop in it so water stays in loop, not back flow so much.
my 2200 and 2000 gph pumps push water out well and far-but only one has an auto switch. i have 2 as i have deep bilges.
my otto switch is lower than my assigned pump, and a too late noisemaker on it for water level below cabin sole
. only heard that damnable scream one time automatic. was enough.
once my under engine
pump is done pumping, there is still water in my bilges, but mine are wet ones. i keep under engine
pump in a plastic collander to strain out stuff that falls into bilges. (hair, stuff)