whats wrong with my tank?

ok si they should go up to the surface? what about return? right now I have return hitting glass, powerhead slightly hitting sand/
 
I have to agree with fakename totally. These are problems mast new tanks have. I have set up several and they all do that. My best suggestion would be to bump up the flow some (you will want it anyway later). Watch your parameters. Regular water changes. You can siphon some of the excess cyano and slime off with the water change. Personally i would find a grazer for the hair algae (I like sailfin tangs but your tank is fairly small unless you borrow a small one for a while). The hair is the only algea that if it gets a good foothold will be hard to controll. The rest will pass with time.
Hope this helps and happy reefing
TD
 
As long as the substrate isn't moving and the surface has reasonable agitation, the return should be fine as it is.
 
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