I just got a salt water tank , 180 gal , huge wet/dry filter , aquaclear skimmer , I set it up last night , the DSBsand is in it , I put the water in spgravity is 1.0020 , this is all Ive got in the tank I want a fish only tank , but from what Ive been reading I need some LR in there too , I only have the lights that came with the tank, 2 double strip lights how much base rock and live rock should i be able to have. Or have I already messed up by noy putting any LR in it yet ?