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Results 1 to 6 of 6
  1. Default 10,000k vs 6,700k

    0 Not allowed!

    I currently have a 10,000k 24w bulb plus a colormax 24w HO bulb on my 10g tank, and was wondering if I should swap the 10,000k bulb out for a 6,700k 24w bulb? I will be doing a planted tank, I haven't quite decided on the kind of plants but I heard the kelvin makes a huge difference.

    Can anyone advise?

    Thanks in advance.

  2. #2


    1 Not allowed!
    The 6700K bulb will be much better for plants. I would swap them. If they are over 6 months old, you should get new ones as the color shifts and the intensity decreases over time.

    Liters to Gallons conversion calculator

    "Keeping fish for any period of time doesn't make you experienced if you're doing it wrong. What does, is acknowledging those mistakes and learning from them." ~Aeonflame
    your argument is invalid." ~Mommy1

  3. Default

    0 Not allowed!
    Yeah that's kind of what I thought. So the 10,000k, would kind of burn the plants and not allow them to grow as well?

  4. #4


    2 Not allowed!
    The 10K bulbs can certainly work for plants, they just are not as good as 6700K bulbs (at least in my experience). The higher the K value of a bulbs means the more blue will be in the light and the more you risk algae growth.

    I have had the best results with 6700K bulbs on my tanks.
    If you take your time to do the research FIRST, you can successfully set-up and keep ANY type of aquarium with ease.
    "Not using a quarantine tank is like playing Russian roulette. Nobody wins the game, some people just get to play longer than others." - Anthony Calfo
    Fishless Cycle Cycling with Fish Marine Aquarium Info [URL=""]

  5. Default

    0 Not allowed!
    Okay. I think I am going to swap out the 10,000k for the 6,700k bulb. Thanks guys !

  6. Default 10,000k vs 6,700k

    0 Not allowed!
    Funny we overhere (Holland) think 4000 K bulbs are the ones for plantgrowth. Often in combination with 6500k. 10.000 K are believed to be right for African Cichlids or even Marine tanks.
    No Cory, No Glory !!

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