Fluorescent bulb orientation

[salmon alley]

Hello all,

Planning out my 180, and need some opinions on how options for orienting VHO bulbs.
I'm going with 250W MH and I want to use Actinic supplementation. So my options are:
A) (2)- 6 foot 160W bulbs
or
B) (4)- 2 foot 75W bulbs oriented perpendicular to the front of the tank, and spaced along the length.

Anyone have opinions on which is likely to provide better coverage/intensity?

Thanks
SA

[Nanook]

I would go with 2 six foot URI VHO superactinics. FWIW


Nanook

[Jamesurq]

I second that, less bulbs = less replacement cost and more efficency. (less lost energy)