I really need help. (Hopefully with a Herbie style drain)

[sphelps]

Originally Posted by rocketlily

Would not reducing the drain size force the water out faster?

Only if pressure exists, the water will fail due to gravity so unless the pipe is full velocity may actually decrease due to pipe wall friction. But the main purpose is to stop the air from entering the drain and stay in the standpipe exiting through the vent hole(s). Running a horizontal section will also help, it will slow the flow and cause the pipes to flood better again keeping air in the standpipe not the sump. It really sounds like you would benefit from a Herbie style overflow, but I'm guessing you only have the one drain?