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Hoppy Hoppy is online now

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Showing Visitor Messages 91 to 100 of 172
  1. Hoppy
    05-21-2012 10:49 PM
    Hoppy
    I have never grown HC, and my experience with glosso was limited to trying out the dry start method. So, I can't comment on use of T5NOs for growing HC/glosso. I also have never used NO lighting, so I can't comment based on my experience with them for growing any plants.
  2. ThatGuyWithTheFish
    05-21-2012 09:51 PM
    ThatGuyWithTheFish
    In your experience, can T5NOs grow HC/glosso carpets or ludwigia?
  3. ThatGuyWithTheFish
    05-14-2012 06:28 PM
    ThatGuyWithTheFish
    Hm, here's a link to his site:
    http://unclenedsfishfactory.com/

    You probably don't know him, or you would've recognized his name instantly. :P
  4. Hoppy
    05-14-2012 06:05 PM
    Hoppy
    Uncle Ned? No, I had a lot of uncles, but no Neds.
  5. ThatGuyWithTheFish
    05-13-2012 08:56 PM
    ThatGuyWithTheFish
    Hey, do you know Ned of Uncle Ned's in MA? Your avatar really reminds me of the one from his website homepage.
  6. Hoppy
    05-09-2012 04:52 AM
    Hoppy
    treelimbjim, that other post was done back when I was still trying to make sense out of designing a LED light. I wouldn't recommend following that method now. The calculator is based on more data and more varied data. If you have taken some PAR measurements with other configurations I would appreciate receiving the data so I can see how it fits in with the other data I have.

    This is still an evolving design process, but I haven't seen a better process.
  7. treelimbjim
    05-09-2012 03:23 AM
    treelimbjim
    Thank you for your contributions.

    Trying to answer "How many (and type) LEDs to use my 70 gal?" or simply, "Is 24 XPG enough? 36?"

    I've been estimating with spreadsheet V.3.

    Tank: 48wx18dx20h, 3" substrate

    Frame: 1.5" aluminum extrusions, 3 x 48" rails on 5.25" centers.

    Mod/add:
    Table for PAR est. for L,M,H light (see below)
    LED height: Tank_height + LED_Height_above_water - Substrate_depth
    Conditional format: 1) PAR background is blue, green, orange for L,M,H light. 2) current background is red when >rating.
    Table for Spread with LED_Height and Cone_Angle

    I'm not clear about how the "rows" work. I'm trying the geometric mean of LED_spacing and my LED_row_spacing.
    Trying to validate the calculations, I ran across 84212-designing-building-led-fixture-22.html#post1102937
    ... and the spreadsheet isn't coming close to real world observations.

    Where to go from here?
  8. Hoppy
    05-08-2012 04:07 AM
    Hoppy
    Mark,
    The number and spacing of LEDs for any size tank can be calculated with reasonable accuracy using a Excel Spreadsheet "calculator" shown here: http://www.plantedtank.net/forums/di...ml#post1803323 I doubt that you will want to use Cree XP-G LEDs for that small a tank. Perhaps XR-E would be a better choice.
  9. MPH1
    05-08-2012 03:31 AM
    MPH1
    Hello Hoppy,

    I understand you are the aquarium lighting mentor. I was sent over here from Nano Reef by Evilc66. I am looking for some help with the lighting for my Aquarium.


    I am new to the aquarium/lighting arena. I have a Fluval 12 gallon tank with fresh water. I am wanting to grow some high light plants and carpet plants.

    I am considering a DIY modification to the lighting. I am looking into getting the CREE XP-G LED's. What do you think is the appropriate amount of cool white led's and the total amount of watts/lumens for the 12 gallon?

    Your input is appreciated!

    Cheers.

    Mark
  10. Hoppy
    03-10-2012 09:22 PM
    Hoppy
    With high light it is easy to run short of phosphates, and when you do, GSA starts growing vigorously. The solution is to dose more phosphates - I used to routinely double the EI dosage.

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    Hoppy

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