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I’ve been working on adding a sump for a bit now and had been planning to modify the overflow box to have a bean animal drain. The plan was to have the main siphon pipe, the durso pipe, and then drill an extra hole at the top of the box for the emergency line. In all of my planning I failed to realize that there isn’t enough room in the overflow box for two 90 degree elbows for the drains. Is it a problem if I only use one elbow for the siphon and durso? If that won’t work, would it be possible to remove the two pieces of acrylic showed in the picture below so that I can fit both elbows?