You could "pot" it to prevent future water intrusion: https://www.amazon.com/Epoxyseal-Electronic-Grade-Potting-Epoxy/dp/B00VXV9YZ2&ved=2ahUKEwiyv-7t9vH5AhXqmmoFHVc5A90QFnoECAYQAQ&usg=AOvVaw3xcxqSpYal4bRrJTAjZvZl
DNP never really solved their problems and shut down shortly after this. I think they owed a lot of back taxes too.
Also those tents are great and all but your shelves will eventually get real rusty. My suggestion is something like this with plastic shelving. That's just me though
I’m pretty new to this but I think you can use clear plastic containers that have the little 5 recycling symbol or if it says it’s polypropylene. Right now I’m using these, but I also saw a few listings on Amazon for polypropylene petri dishes that say that they can be autoclaved. I’m not sure how many times they can be used like that but for me what I chose was cheaper than some of the glass ones I saw.
Do you have a pressure cooker? A presto on amazon is about $70.