Aqualumantion hydra led

I have 2 Hydra 52 HD's over my 75G SPS and LPS reef tank. Tank is only 6 months old, but all the frags are growing great.
 
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I had a hydra 26 hd over my 60 g 30" deep lps soft I've changed from lumini asta no growth within two weeks I see the difference
 
I really know nothing about leds, I've always used t5 or mh, but I can't find a t5 fixture strong enough. Is one enough for a 65? Can I use it without an aquarium controller?
 

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

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