I am getting ready to re-do my overflow pipe. It is currently an 18" rusted and damaged metal pipe. I plan on using 24" Corrugated pipes with a 90degree elbow.

Link below is for the 90 degree and the coupler.

https://www.menards.com/main/plumbing/ro...e_facet=24+inch

The question may be a stupid one. But is that coupler strong enough to keep water from leaking into the piping? I dont want the pond to have a constant leak, obviously.

Second question. If I used the 'belled' end pipes, does that create a water tight seal?

https://www.menards.com/main/plumbing/ro...e_facet=24+inch


Thanks for ya'lls help