I personally dont think you should dump 6 or 8 fish into your system all at once. Try adding 3 at most if they are small. You may want to look into different gobies. Gobies may be my favorite kind of fish, always doing something.
as for corals, since you are running
MH lights, you can pretty much grow any sps
frags. I personally like
acros and any plate forming corals. If you have strong
MH lights you may need to
acclimate your corals to the new lights. You can do this by shading the coral with light diffuser or starting it in the bottom of the tank and moving it up bit by bit. I
bleached more than one
frag by just dropping it into the top section of the tank in full light. You may want to start with a "cheap"
frag and see how it goes. Dont start with $100 LE corals.
