Which AI hydras and how many?

I'm running four 32HDs along with an AquaticLife DX18 dimmable T5 fixture on my 4' 100gallon Acropora tank. It's a bit overkill for PAR, but has a nice spread.

+1 on what @PatW said.
 

IF YOU HAD TO TAKE A REEFING EXAM, WOULD YOU PASS?

  • Yes!

    Votes: 32 45.7%
  • Not yet, but I have one that I want to buy in mind!

    Votes: 9 12.9%
  • No.

    Votes: 26 37.1%
  • Other (please explain).

    Votes: 3 4.3%
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