Rustoleum Leakseal Safe?

So I am setting up a new tank and found that one of my 30 gallon Rubbermaid trash cans I plan on using to make my water leaked. I was curious so I sealed it with rustoleum leakseal. It’s like that flex seal stuff you see on infomercials. Well, now it’s dried and the can doesn’t leak and the VOC smell from the leakseal is gone but I’m still nervous about mixing water in it. Has anybody had any experiences using this stuff?