Ooler problems after cleaning

Ok I used too much H202 (hydrogen peroxide) to kill stuff inside my aging Ooler. It vomited foam and spilled everywhere which I cleaned up. I detached everything and opened the cap. Let it sit for a few days in a dry area hopefully off-gassing etc.

There may still be h2o2 inside the pad of course.

Went to reattach and refill it with regular water. Instantly it started leaking the same way it did a couple days before. It's like something inside is busted and leaking now. Don't really want to plunk down the money for a brand new unit.

Any ideas?