Durso standpipe issues with addition of new pump

[Chin_Lee]

i suspect you may not have enough air getting into the drain to allow the water to exit smoothly therefore causing a siphon at a certain level when filling up. Also check the air hole for salt creep which in turn decreases the air into the durso. If the hole is unobstructed, drill a hole the next size up on your drill bit set and test it out.

[rudy]

Thanks Chin Lee. That worked.