I am starting a 110G mixed reef tank. The dimensions are 48x18x30. I've been told a 32" 200w fixture with 90 degree optics will work but i'm concerned with the edges being darker as well as the bottom since the tank is 30" deep. I plan on just starting out with softies however down the road I want to add LPS and SPS. What do you all think about the 32" fixture for my tank or should I get (2) 24" fixtures. I would love to only buy one fixture but if i'm going to have to upgrade down the road I would rather just bite the bullet now and have lighting the will suit my needs in the future.