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Page 2 of 3 FirstFirst 123 LastLast
Results 11 to 20 of 21

Thread: 6700K vs 10000K

  1. #11

    Default


    0 Not allowed!
    also the GE plant & Aquarium bulb everyone sells is the 9325
    As I get older I find myself thinking about the hereafter - I go into a room and then wonder what I'm here after.

    AC's Free Aquarium Ebook

  2. #12

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    0 Not allowed!
    Seems to me, you can get more bang for the buck with the compact fluorescents, wattage wise. The T-5 fixtures I have seen are way more expensive in comparison.

    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. #13

    Default


    0 Not allowed!
    T5 fixture are more expensive mainly because of the high quality reflectors used
    As I get older I find myself thinking about the hereafter - I go into a room and then wonder what I'm here after.

    AC's Free Aquarium Ebook

  4. Default


    0 Not allowed!
    Here are soem affordable t5 fixtures. I have one my self. And the lowest they have is 10000k.

  5. #15

    Default


    0 Not allowed!
    There is a reason so many reefers and planter are ditching their compacts for T5s, the light is better, much better. Check ebay for good deals. I keep finding great options on ebay.

    Combining different color bulbs can help balance the look of a tank. If you have nothing but 6500K it is a reddish white. If it is balanced with bluer bulbs the overall look is a whiter white and all colors are enhanced. The plants still get the red they need, but other colors are there too. So blue fish will show their best under mixed lighting with a higher Kelvin rating than if they are just under 6500K. And remember the Kelvin rating is just an average, most still have colors from all over the spectrum.

    Combinations of lights are very common because of this. Even reef tanks usually have a varied combination of lighting. The corals need 6500K for photosynthesis but also bluer colors to enhance pigmentation.

    There are 6500K bulbs, 10,000K, 20,000K, and actinic (and a few others). I use 50/50 bulbs that are half 6500K and actinic so the overall color is a bright crisp white with the reds the plants need and the blue light needed to balance it.

    As long as enough of the right colors are there (mainly red) than it is fine, even there is a lot more blue that brings up the overall Kelvin color.
    Aquarist since 1995
    Biologist and Published Author in Multiple Aquarium Magazines
    Owner: Aquarium Maintenance Company
    Advanced Aquarium Concepts: Articles about many aspects of aquarium care.

  6. #16

    Default


    0 Not allowed!
    Strongly disagreed based on CRI. I have solely 6700K lit tanks (my daughter's 29 gallon is an example of such) and there is no "reddish white" appearance. Degrees Kelvin is separate from the CRI. A well-designed bulb can output the targeted Kelvin while maintaining an "eye pleasing" CRI. A decent article is linked below:

    http://www.topbulb.com/find/cri.asp
    8 tanks running now:
    1x 220 gallon, 2x55 gallon, 1x40 gallon long, 1x29 gallon, 1x20 gallon long, 1x5.5 gallon, 1x2 gallon
    Gouramis, barbs, rasboras, plecos, corys, tetras, fancy guppies, swordtails, ottos, rainbow shark, upside-down catfish, snails, and Max and Sparkles the bettas.

  7. #17

    Default


    0 Not allowed!
    Next to a 10,000K light or a 50/50 there is a difference.
    Aquarist since 1995
    Biologist and Published Author in Multiple Aquarium Magazines
    Owner: Aquarium Maintenance Company
    Advanced Aquarium Concepts: Articles about many aspects of aquarium care.

  8. #18

    Default


    0 Not allowed!
    Depending on the CRI of course, yes, there is a difference.
    8 tanks running now:
    1x 220 gallon, 2x55 gallon, 1x40 gallon long, 1x29 gallon, 1x20 gallon long, 1x5.5 gallon, 1x2 gallon
    Gouramis, barbs, rasboras, plecos, corys, tetras, fancy guppies, swordtails, ottos, rainbow shark, upside-down catfish, snails, and Max and Sparkles the bettas.

  9. #19

    Default


    0 Not allowed!
    That is why checking the graph on the box on the light can be helpful, make sure it is not just a couple spikes.
    Aquarist since 1995
    Biologist and Published Author in Multiple Aquarium Magazines
    Owner: Aquarium Maintenance Company
    Advanced Aquarium Concepts: Articles about many aspects of aquarium care.

  10. Default


    0 Not allowed!
    Personally, I use 6700K PCs with 10,000K halides on the tanks of the size that need the halides. The discussion on this thread simply proves there's more than one way to skin a cat. What works for one may or may not work for the other.

    Dave
    When a finger points to the moon, the imbecile looks at the finger.

    Omnia mutantur nihil interit.

    The more you read, the more things you will know. The more that you learn, the more places you'll go

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