Setting up my first SW 90g + lighting

[mr_alberta]

Welcome to the board!

How tall is the canopy? It doesn't look that tall and because of that, you might be limited to what type of lighting you run on your system. I have seen the coralife fixtures at retail stores and they look really slick, but I'm not sure if that particular system would work well for you because the cooling fans for the lights are at the top of the fixture and you wouldn't be able to mount it flush with the top of your canopy. You would have to leave a bit of a gap so there is air exchange.

I have seen some very gorgeous VHO only tanks. This included many SPS only tank with excellent growth and color. This could be an alternative for you, but you will not get the shimmering effect. The new kid on the block, T5 lighting, may also suit your needs.

As for a glass divider, a lot of reefers don't use them (unless you are using Double Ended MH setups) because eventually evaporation will cause salt creep onto the glass and block out a lot of light. Again, many of the VHO setups that I've seen and even some of the MH setups didn't have a glass/plastic divider.