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Thread: Led for a 40g

  1. Default Led for a 40g


    0 Not allowed!
    Hi all,


    I have come accross this LED bar:http://www.aliexpress.com/store/prod...765005383.html


    It is really tickling my curiosity to buy it for a low light set up. The tank is 75x55x55cm. Will be growing some Java Ferns and other low lights.


    Do you think 27W would do the trick?


    I was also thinking what ratio should I order. They allow you to put any redwhite - totalling 22 LEDs


    Was thinking 10 White @ 12000K + 8 Blue @ 450nm + 4 Red @ *660n. Are the wavelengths good? Any other suggestions?


    All your help will surely be appreciated!!


    Thanks

  2. #2

    Default


    1 Not allowed!
    The link you posted is for a light fixture meant for a marine aquarium. It has a lot of blue light in it which can really promote algae growth in a FW set-up.

    I would look for something without the blue LEDs. By that I am not referring to the night / moon light option.
    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="http://saltwater.aquaticcommunity.com/"]

  3. #3

    Default


    2 Not allowed!
    Those color temps are no goo for growing freshwater plants, you want something in 6500.
    Edit* Ninja'd by Cliff

  4. Default


    0 Not allowed!
    I can tell them any ratio and colours I want. What's your suggestions then? 16 white @ 6500k 4 blue @ 450nm + 2 red @660nm?

    Thanks!

  5. #5

    Default


    1 Not allowed!
    No blue, all white at 6500 to 6700K.

    Maybe two red for some extra color
    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="http://saltwater.aquaticcommunity.com/"]

  6. Default


    0 Not allowed!
    Thanks for d info.

    And is 22w sufficient?

    Which wavelength should I aim for on the Red spectrum? They have different options
    Last edited by yancho; 01-14-2014 at 06:36 AM. Reason: Added the Red spectrum question

  7. Default


    0 Not allowed!
    I have drafted the below customisation - would it work? tried to mix 65k 66k and 67k as per your instructions?

    Went for 3 red to disparse the light .. any suggestions will be truly appreciated

    https://docs.google.com/spreadsheet/...mc&usp=sharing

  8. Default


    0 Not allowed!
    Found also the below option too

    http://www.ebay.com/itm/Waterproof-5...item2c70d62345

    don't think its any good right? low wattage

  9. Default


    0 Not allowed!
    there is also this option: http://www.aliexpress.com/store/prod...877033947.html

    They can customise as below:
    1) Size: L500cm (5M) x W0.8cm x T0.25cm
    2) Emit Color: white / warm white / blue / green / red / yellow
    3) Protection Rate IP65 Waterproof
    4) Working Voltage: 12V DC
    5) LED Quantity: 60leds / m, 5meter / roll
    6) View angle: 120 ° ~ 140 °
    7) Working Temperature: -20 ° to 50 °
    8) 350-450mcd/led
    9) Wattage: max 12W/meter,


    and there is this option as well: http://szjiangjing.en.made-in-china....L36W-L36-.html

    to be colored as:

    Specification:
    Power:36W;
    Size: 60CM;
    Price:$29.12/pc
    LED Type /Number:3W*12Pcs;
    Color: white and red:65(11pcs white and 1pcs red).
    transportation expense:$33.5
    color temperature of white :3000-20000k
    wavelength of red :630nm

  10. #10

    Default


    0 Not allowed!
    I'm not 100% sure on how to evaluate option #1

    Option #2 doesn't list the wattage or angle of lenses used so it is tough to offer a informed opinion. But it should be OK for mosses and very low light plants in a 21 inch (55cm) tall aquarium like yours. You might need 3 unit though, but you could try one, see how it goes, and add a second later. But then again, there is a pretty good chance I could be way off without knowing the wattage and lens angles

    Option #3A looks like it is meant to bed used in a DIY fixture. while the color temp is goodand the brand / wattage of the LEDs is good, you will still need to buy a power supply, controller, lenses, heat-sinks, and put it all together in a canopy or fixture body

    Option #3B is still a another one better suited for a marine set-up. You really need to get one with 7000 K or less color temp. Even if you choose the all white LED option, the lowest listed color temp is 12,000K.

    Sorry if I am raining on your parade, but I would not buy any one of them
    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="http://saltwater.aquaticcommunity.com/"]

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