I have a 55gal tank, as shown with just 2 clowns in it. They have been living happily there for about 2 months now. I think it is time I want to add more animals. In the second picture you can see my sand is getting kinda brown in areas. Possibly uneaten food that is decomposing? I don't have any critters that sift the sand and think my next investment would be something of a cleanup crew? I'm open to suggestions, but what I was thinking is maybe some snails, shrimps, crabs, a starfish might be cool. Of course there is fish that do the sand sifting too. Which leads me to my next question I have a QT and the clowns were QT'd for 4-5 weeks before going to main tank, I understand QTing fish for their parasites, what about a clean up crew? I don't really wanna set it all up and go thru the hassle for a few snails, but I don't even know if it is even necessary to QT a CUC. I've done some searching online, haven't found much that discusses this.
As far as other fish I would LIKE to have at some point would be a wrasse, flasher or fairy, Regal Tang (big enough tank you think, every site says a different minimum tank size), a angel (perhaps a coral beauty, flame or rust), then there are some blennies and gobies that I like. Just ideas floating around.
Anyway thanks for the help guys/gals!