New to saltwater aquariums

[NCHammer]

Hey guys i came across a 90 gallon tank w/ overflow wet/dry sump and protien skimmer. Everything looks in good shap and works well the skimmer looks as if its missing the lid but i think i can make one....
I need you wise peoples help on what kind of fish how many? the dos and donts of saltwater .. and other things i wouldnt think of...

Thanks Hammer

 

[uncwnells]

You might get a better response in the saltwater section