What does everyone think for a 42 gallon cube

It's a good start! If it were me, I'd have another bridge. Also, consider a cave or two so that a fish may just back in and hide out. You don't have a lot of room, so you'll end up giving one thing up for another, but whatever you choose to do will work out fine. I like the island you've created. To me, those are a must. Even if it's just one.
 
When my next build finally happens, it's the scape that's going to be the most fun to set up. I haven't had a tank in 12 years. Back then, ya just piled up rock on the back glass and went with it. Maybe an overhang, and a cave or two, but the focus was fitting 2lbs per gallon of rock in a tank. Not a lot of artwork there. So yeah, I'm looking forward to seeing what I can create for a 48x39x25.
 

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HOW IMPORTANT ARE FISH TO MAKING A REEF TANK FEEL COMPLETE?

  • Essential! A reef needs fish movement and personality

    Votes: 33 66.0%
  • Very important, but one or two fish may be enough

    Votes: 5 10.0%
  • Optional... a coral-only reef can feel completely finished

    Votes: 2 4.0%
  • I actually prefer a coral-and-invertebrate-only system

    Votes: 0 0.0%
  • It depends on the tank’s size, style, or purpose

    Votes: 8 16.0%
  • I’ve kept a fishless reef (details in the comments)

    Votes: 1 2.0%
  • Well...it's complicated... (answer in the comments)

    Votes: 1 2.0%
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