It looks like shattered safety glass after I've done that in the past. Star San does the same thing. I've actually had star san eat through the bottom of an old bucket I was keeping it in. try some vinyl tube for a month. lol it makes it look milky and sticky.
I'd hot rinse it all out and see how it looks. Maybe follow up with another warm oxy clean and hot rinse, then use a qtip to swap the inside of tubing/cane to see if any funk comes off it. If not I'd sanitize and put to use, otherwise discolored or swab shows funky stuff get new tubing