[mattie]

you should be more certain about what you want to get in a 10g as far as live stock before you pic out the light becouse as you already know certain corals need more light than others. mushrooms and most soft corals do not need mh lighting to do well
acros and certian clams require very strong lighting such as mh.
a 150mh would be very bright and would grow anthing you wanted in the light department for a 10g nano.
my thought was certian corals don't well tother becouse the like different water flow as well as light
and some really do not to be slimed by others