My first tank just finished cycling and I’m getting a pair of clown fish today. It’s a 45 gallon tall. They had a blue tuxedo urchin at my LFS that I really liked. Would it be ok to add him at the same time as the clowns or does the tank need to be more established? I wouldn’t mind feeding him if needed. I also want to get some snails. I wasn’t sure when I should add them, right away or wait until I have more fish to clean up after. Thanks!