LED Question Please

[cosmokramer]

Hey guys i recently upgraded my tank to a 75 gallon. I am Using Green Element EVO Quad Reef LED Light Fixture 48" i was just curious how high i should mount them off the water?. would anybody also know if this is enough light for my tank the specs are .


Fixture Size: 47.00" x 9.25" x 1.25" (Add 0.65" in height with bracket installed)
LEDs Count: 64
8640 Lumens
Super energy efficient 3 watt high output LEDs
48x 10,000K LED
16x Actinic 460nm LED
Use 192 watts

Features:
Best design: slim, light, and yet, contemporary
2 three ways toggle on/off switches function as (1) White/Act. Blue, (2) Off, & (3) Act. Blue as lunar light
Extends up to 51" in length with brackets installed
Individual & replaceable lenses (**New & Improved Wider Angles**)
2 external high power transformers

 

[slideways03]

What are you keeping in the tank as far as corals?

 

[cosmokramer]

sps as well as lps

 

[marklugo23]

It's a mixed reef. Softies Lps and sps

 

[rkaragozler]

cosmo, I can come over with a par meter and measure your existing light, and than adjust where the led can be off water level.

 

[baktabiznis]

Im very interested in these led's for a new 75 gallon reef setup. I cant find a recent review on them since they updated them with the 2 mode power switches. I would really like to know if they are capable of growing lps/sps and if the update makes them worth wild.