29 Gallon tank, some stuff, where to go from here/what else is needed? Pics!

Got a free tank, it is a 29 gallon, just needs to be cleaned up then it will look like new. Looking to make it my first saltwater tank. Will probably start out FOWLR because everyone says they are the easiest to start out with. Heres the tank:

The tank has a Hang on the back filter, can this even be used? heres a picture.

There were some rocks from what ever was previously in it, I dought they can be used? they feel very heavy and dense they are definately not fake. here are some pictures of them.


Here is a heater, dont know if this could be used for the tank, but im sure it could at least be used for mixing water up. here is some pictures.



what else do I need to start my tank "equipment wise" not including rock/sand/fish/salt/ect. I will need, 1 or 2 power heads? I quality heater. But I feel like im missing something else?

Will probably get a protein skimmer.

Your guys thoughts? I think I finally figured out how to get the pictures on here.

 

Find sombody to drill it ;-) So in the future you can add a sump. probbly a hob skimmer unless you are going to make a sump. I went without on my first two tanks and am regretting it hard now

 

Also forgot to add that I would probably need to get some better lighting.

Protein Skimmer would definately be on the list.

 

Got the tank cleaned up and it looks great!