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MH lighting? Bulbs really

Discussion in 'General Discussion' started by Kpotter2, Mar 17, 2012.

  1. Kpotter2 Expert Reefkeeper

    North liberty, IA
    Ratings:
    +7 / 0 / -0
    What is best for Growth on corals? 10k,14k or 20k?
    I have 20k on my MH now and need to replace them soon. I am figuring out should I go with 20k again or 14k like most do?
    Thanks
    Kyle
     
  2. mthomp

    mthomp Inactive User

    Ratings:
    +0 / 0 / -0
    10K is best for growing but I find they make the water look yellow. I prefer the look of 20k but I feel with 14k you get good growth and realistic color.
     
  3. Kpotter2 Expert Reefkeeper

    North liberty, IA
    Ratings:
    +7 / 0 / -0
    Thanks mthomp!
     
  4. Reeferforlyfe

    Reeferforlyfe Inactive User

    655
    Ratings:
    +0 / 0 / -0
    Indeed, the lower the kelvin, the better the growth. I ran 14 k on my mh, until I got the AI's. Never go back to MH.  14 k is the best of both worlds. Great color, and growth. Gl
     
  5. Kpotter2 Expert Reefkeeper

    North liberty, IA
    Ratings:
    +7 / 0 / -0
    Great thanks Money!
     
  6. Tholton33

    Tholton33 Well-Known ReefKeeper

    537
    Ratings:
    +0 / 0 / -0
    go 6500k you'll grow like mad! just not very good to look at
     
  7. Jamie

    Jamie Well-Known ReefKeeper Vendor

    591
    Ratings:
    +24 / 0 / -0



    Defiantly, you'll also be able to grow more algae with a 65K bulb[​IMG]  Personally I like the 12K reeflux bulbs, with the luxcore ballast I can get anywhere from a 10K to a 20K color out of them by varying the wattage.

     
  8. Sponge Expert Reefkeeper Vendor

    Marshalltown, IA
    Ratings:
    +233 / 1 / -0
    Agreed that the lower the kelvin, the better the growth. However, tank depth and how high above the tank needs to be factored in....In other words, PAR :-0)
     
  9. jstngates Experienced Reefkeeper

    Toledo Iowa
    Ratings:
    +40 / 1 / -0
    i had 10k too yellow! i switched to 14 k phoenix and they are great.
     

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