what kind of corals can i have with my light?

[is_that_a_fish]

I have a 75 gallon and i have one 250w 20k metal halide....it is placed in the middle of the tank....example ______bulb_______. what kind of corals can i have with this setup or do i need more light. i really want some zoos and mushrooms.....

[tims]

if you can take a shoot of the tank that would also help.
that is nt a whole lot of light for the tank it self. but mushrooms and Zoa's shoudl be fine for it.. if you can incease it by one more 250w Mh you will be good to go for a lot more.
since you are using a 20k bulb. are you using any other lighting to off set the coloring?