Psst, dude, I’ve been doping on this, it’s good shit man… “Price Driscoll’s Ultra 4 Urathane Parafilm” haha
It’s like aerosol-ized Vaseline. A few months ago my printer finally came back from repair again and I discovered the silicone on the bottom of my tank appeared to have dried out. It was like one of my silicone molds when it ages, it got dry and rough. So I had some of that stuff to rejuvenate my silicone molds and I figured I had nothing to lose. I splashed some IPA in the tank and used the scraper to scrub it clean. (I know that made it drier, but who cares at this point.) Then I cleaned it up and dried it out. Then I lubricated it with a healthy blast of the spray. It made the PDMS look hazy so I rubbed it with my finger to get a glossy texture. I tested it by gliding my scraper over it and it really glided much better. After a few days it was super slick just like new silicone. I am still using that tank today.
But most tanks die from clouding, and you can’t reverse that.