HELP! Height of LEDs

Discussion in 'General Reef Aquarium Discussion' started by capital1983, Mar 21, 2020.

  1. capital1983

    capital1983 Member

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    Hi all,

    So I just got 2 Vioar Spectra 165w LEDs for my 75g reef w/ 29g sump.

    Previous to this I was running a 716w metal Halides unit with T5s. I used the legs that came with the unit instead of hanging it so the unit was probably about 5 inches off the water column.

    My hammer corals experienced a lot of bleaching due to this and I am hoping I can nurse them back to health with these LEDs. I have mounted them 11” off the water column. My photo period is blues come on 11am whites 1pm then whites off 7pm and blues off 9pm.

    I also purchased Brightwells CoralAmino - Amino Acid Complex that I plan to start dosing to help aid the healing and new growth. I feed coral frenzy 2-3x a week.

    Do you think there is anything else that I should do? Thanks!!![​IMG]


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  2. Uncle99

    Uncle99 Well-Known Member

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    I use the same lights over my 65g.
    They are very powerful and can easily fry corals.
    Visparspectra states 1000 par 8”, I found it more like 750 ish.
    I run 80% blue on 10% white, 14” off the water, 400 ish right under the light.

    Transfer slowly from 30% blue, 1-10% white, over months to 50-80%Blue, 1-40% white depending on the depth of blue you like and of course, how corals like.

    All looks good to me, good luck, I have been real happy with mine.
     
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  3. capital1983

    capital1983 Member

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    Thank you for your additional advice uncle99! I heard from a bunch of hobbiest around me that 8”-14” is widely used for LEDs. I think that things will shape up in due time and I have fragged some corals and placed them at different depths to see what they like best. I absolutely love the difference and am very happy with my setup now as well!


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