LIGHTING
This was another tough decision"¦ back in the day, I ran with Metal Halide and supplemented with T-5's, but with energy costs the way they are going in Southern California (I live in one of the more expensive areas for energy in the country with SDG&E as my utility provider) and the controllability you have with LED's, it seemed like it made too much sense NOT to go with some form of LED lighting option.
So, then it became a decision of whether I wanted to go with only LED or a hybrid option of LED and T-5. I did quite a bit of research on this, and it seems like the safest bet on making sure you have enough coverage/spread on such a wide tank without shadowing after the SPS frags have grown into SPS colonies is either a car downpayment's worth of LED's or a hybrid of LED's and T-5. I took the more cost effective approach here and decided to go with the hybrid option.
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LED Option: When first trying to make this decision, I narrowed my options to either the Ecotech Radions G4 XR30 Pro (the G5's weren't out when I was considering this) or Kessil A360X. Honestly, I was kind of leaning towards the Kessils until the Ecotech Radion G4 sale popped up and I couldn't pass up the deal. So, I scooped up 2 XR30 Pro units to pair with the 4-bulb hybrid T-5 fixture.
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T-5 Hybrid Fixture: The choice here was mostly about aesthetics since I planned to simply mount the fixture above the tank without a canopy. Initially, I was looking at the Geisemann Stellar fixture since the fixture I chose NEEDED to only have the power cord(s) come out of one end (since this is a peninsula style) and the standard Aquatic Life hybrid fixtures have the power cords coming out of both ends (although you can turn one around). But then I came across a deal for the Dimmable Aquatic Life T-5 fixture and went with that one. Only one power cord coming from one end AND looks a bit sleeker than the other hybrid fixtures I was looking at.
Future Expansion
Depending on the PAR readings I get on the current set-up, I might have to expand the spread of the unit and/or add some more power.
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Expanding the spread: for this I might consider attaching some Reef Brite 50/50 or Actinic XHO LED strip lights (attached to the outside of the Aquatic Life T-5 Fixture) if I find the perimeter of the tank is being underlit.
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Adding more power: for this I might consider adding another Ecotech LED fixture (maybe a G4 if I find a good deal, but more likely a G5 XR15 Pro).