placement of MH bulbs

[hockey nut]

Tank dims are 48 x 24 x 24". I will be running 2 x 250wt MH and 4 x 110wt VHO atinic. The length of the MH bulb and socket are 9 1/4 inches total. If I space it out from either end about 5 1/2 to 6 inches there should be a space between both bulbs of about 16" . Is that too far apart?


should be about 20- 22 inches wide by 48" L.

Any helpfull hints etc???? Thanks