do gobies swim freely alot? what about a cleanup crew and a yellowtail damsel
That would work. Damsels are mean though, but since it would be by itself you really wouldn't need to worry about that.
As for a clean up crew you have tons of options. I'm really not sure what kind of stuff your store offers, but here is what I would look into if I were you.
A live mysis gammarus kit.
This will have a ton of teeny tiny little critters that will clean up stuff in your tank, it will have copepods, mysis shrimp, gammarus, and other little critters. You'd have to see if your store sold them.
Hair worms are great detritivores that will hangout in your sand bed.
Stomatella snails. Little guys that will breed in your tank, great cleaner.
Bristleworms... some people hate them, personally I think they are one of the best detritivores you can have, I love them.
That would be your cleaners that pretty much go un noticed.
Next you have what I consider your janitors.
Mini brittle stars. Great detritivore, if you are getting good quality Liver rock some will be living in it most likely.
Some sort of surface dwelling snail. Bumble bee snails, Nerites, trochus... they all stay pretty small.
Nassarius snails are awesome, they constantly stir up your sand bed. and eat any leftovers that hit the bottom
and of course you have your hermits.
This list could go on and on, but those are some good ones.
the cowfish seem to be somewhat picky eaters. and i dont rerally like gobies all that much. what kind of things do most SW fish eat? frozen foods?
Yeah, they are sort of. Most saltwater fish will do fine with a good quality pellet food or flake supplement with Frozen mysis, Frozen cyclopeeze etc.. depending on the fish you end up getting.