Back in the day when I had a 180g tank (it leaked and was torn down about 4 or 5 years ago) I had a fixture with 3 MH and 4 t5 bulbs (32" long if memory serves me). That worked very well but in a house running A/C virtually 24/7 for 6 months of the year (SW Florida) they weren't my best idea. Then I got 2 EverGrow 32" led fixtures and they were great back when black box led fixtures were fairly new to the
market. Now, Reef Breeders sells the Photon v2+ in a 32" length. It's made by EverGrow and sold by them as well outside the US. It has great PAR, spectrum control (6 channels), Cree & OSRAM leds (some 3 watts and some 5 watts thus the great PAR), sunrise & sunset control, it comes with both legs and hangers and it's a very good looking slimline fixture. Oh, and Reef Breeders is a sponsor here and has a forum where you can communicate with Logan the owner.
BTW, just to be clear, I have a 40g cube and a 16g spare tank and the both have Photon V2 fixtures.
You can see an old EverGrow 16" black box fixture over the 75g hexagon tank. There were two 32" fixtures under the canopy.
Today I use the Photon V2+ over my 40g cube. I sold the 120g tank and hardware about 2 years ago.
This is what the 40g cube looks like today.