Project Reef is right on the money. I can see that your tank size and lighting are fine. Tell us about the age of your setup, and what other livestock you have in there.
As far as water parameters go the following are kinda the standard to look ofr:
Calcium above 375
ph between 8.0 and 8.4
salinity around 1.025
nitites 0
nitrates a trace is ok maybe less than 5ppm
ammonia 0
temperature around 77-80 degrees
Just as important to these above values are the fact thgat they should be kept as stable as possible.
Best of luck, and fire away with any more questions you may have.
Rob