Easy-to-install! Just PVC cement one end of the flex hose into the bottom of the bulkhead on your overflow box set & drop the other hose end into your sump's bubble diffuser.
It's best to have the hoses dump above the water. Hoses can be cut to achieve this.
For those needing more than 4 hoses I suggest considering a Horizontal dump design which uses just 2 Ft hoses connected to a 2" horizontal PVC dump pipe. For more information on how to easily plumb a horizontal dump see my "How to Setup" articles.
In use at AquaCorals!