I cut the water to just below the emergency drain compartment.
Mostly interested in keeping it operating silently but when I was also using the emergency drain it was splashing water in the sump area and causing moisture in the cabinets.
Overflow Boxes and Drain Styles - Durso, Herbie, and Bean Animal
Decide which of the three most common types of drains and overflow boxes is right for you and your tank.
www.bulkreefsupply.com
Strainer can always be bought online if you want one