Is it leaking at a seam or is it cracked in the middle of the pane?


Acrylic is easy to work with. Some Weld-On will fix and leak you got. Plus there is no big down time vs using silicone. I wouldn't use silicone to fix the leak.

If its cracked in the middle of the curved pane, not sure how good a repair job would hold up down the road.

Is the sump in use now or is it something that can be pulled out, and worked on? You can get some Weld-On at Regal Plastics or Allied Plastics in San Antonio. Most likely they are going to be closed on Memorial Day though.