First, decide what kind of corals you want to go after. Depending on what you want, you may be better of with T5HO rather than MH
. The MH
will give you the best range, though, if you want to maintain the option to have no limitations on corals.
Definately stay away from the odyssea fixtures.
Do you have a canopy to mount a retrofit kit into, or do you need a self-sustaining fixture?