Help with overflowing sump system

[Myka]

Are you sure it's the loc-line that's leaking and not one of the joints in the PVC or even the threaded union where the loc-line meets the PVC? Try adding some plumbers tape (teflon tape).

[Proteus]

Rebuilding your sump, lowering your baffles will also create room for excess water.

[albert_dao]

The sump has like 0.5 gallon of overflow/flood space. Not optimal. It would be safest just to rebuild the sump as Proteus mentioned.