The Planted Tank Forum - View Profile: Hoppy

Hoppy Hoppy is offline

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Showing Visitor Messages 121 to 130 of 203
  1. phantom85
    06-03-2012 01:37 AM - permalink
    hey hoppy. love your work, the led guru. i would like to upgrade my led fixture. i have done a DIY one before and thanks for your help on that one. at the moment i am i am running 12 cree XML-t6 at 700ma. what i was thinking of is buying 2 of these and running 9 of the cree xml-t6's of each of these and building the heatsink myself. this is going over a 4 foot med planted 60g tank, dosing dry ferts and co2 injected.

    what i wanted to ask your help on is
    1. is there a better driver out there that i just cant seem to find that will save me from having to wire up 2 sets of 9 at 1750ma
    2. is this going to be overkill on the lights?
    3. what would be the best way to arrange them. i was thinking two 4inch wide heatsinks running the length of the tank. if the tank is 18inchs wide then one running say 6inchs from the front and the other 12 inchs from the front.

    thanks man for any help you can offer
  2. Hoppy
    05-21-2012 11:49 PM - permalink
    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.
  3. ThatGuyWithTheFish
    05-21-2012 10:51 PM - permalink
    In your experience, can T5NOs grow HC/glosso carpets or ludwigia?
  4. ThatGuyWithTheFish
    05-14-2012 07:28 PM - permalink
    Hm, here's a link to his site:

    You probably don't know him, or you would've recognized his name instantly. :P
  5. Hoppy
    05-14-2012 07:05 PM - permalink
    Uncle Ned? No, I had a lot of uncles, but no Neds.
  6. ThatGuyWithTheFish
    05-13-2012 09:56 PM - permalink
    Hey, do you know Ned of Uncle Ned's in MA? Your avatar really reminds me of the one from his website homepage.
  7. Hoppy
    05-09-2012 05:52 AM - permalink
    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.
  8. treelimbjim
    05-09-2012 04:23 AM - permalink
    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.

    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?
  9. Hoppy
    05-08-2012 05:07 AM - permalink
    The number and spacing of LEDs for any size tank can be calculated with reasonable accuracy using a Excel Spreadsheet "calculator" shown here: 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.
  10. MPH1
    05-08-2012 04:31 AM - permalink
    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!



  About Me

  • About Hoppy
    Sacramento, CA
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  • Last Activity: 12-01-2016 04:49 PM
  • Join Date: 12-24-2005
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04:56 AM - 58417 mentioned Hoppy in post
08:59 AM - Audionut mentioned Hoppy in post High nutrients promote algae growth and are toxic to aquatic life
...ferts is relevant. Hoppy was merely pointing ...
12:56 AM - Audionut mentioned Hoppy in post High nutrients promote algae growth and are toxic to aquatic life
Hoppy, yes that is what EI...
11:19 PM - dukydaf mentioned Hoppy in post High nutrients promote algae growth and are toxic to aquatic life
...very hour. What Hoppy says makes the most ...
02:46 AM - bassbuster23 mentioned Hoppy in post Excel & CO2
... both benefits that Hoppy stated.
03:26 PM - bassbuster23 mentioned Hoppy in post Cleaning your tank
Hoppy.....will the credit ...
05:27 AM - Nick00Merlin mentioned Hoppy in post 125H Gallon First Time Live Plant Project (Lots Of Pictures)
...resting experience. Hoppy has a lot of good in...
12:32 PM - bassbuster23 mentioned Hoppy in post Will this work?
...ssing towards also, Hoppy. Do go ahead - it...
09:14 PM - thedood mentioned Hoppy in post Types of Metricide question. Thanks Hoppy and bassbuster23
03:04 AM - Audionut mentioned Hoppy in post Wrapping my head around KH and co2. Led light questions! Look!
... Minor correction Hoppy. That would be Bica...
01:39 AM - Audionut mentioned Hoppy in post CO2, pH, and dKH question observation from Hoppy. The last paragraph...
02:32 AM - burr740 mentioned Hoppy in post Lighting an Aquarium with PAR instead of Watts
...hat one was made by Hoppy (thanks again man, i...


03:30 AM - Leeatl quoted Hoppy in post Not a pot pot- version two
That looks like a great id...
03:28 AM - Hoppy quoted houseofcards in post ADA Aquasoil vs Eco Complete vs Dirt
So this is all BS? https://ww...
06:59 PM - Hoppy quoted HaeSuse in post ADA Aquasoil vs Eco Complete vs Dirt
Eco! Lots of Eco-hatred goin...
05:54 PM - Hoppy quoted AbbeysDad in post How to Dirt an Aquarium!?
...Any goodness left is used u...
10:18 PM - Hoppy quoted LRJ in post
09:05 PM - BettaBettas quoted Hoppy in post Prop. Temple Plant
Like all stem plants, you ...
06:32 PM - mcdanielnc89 quoted Hoppy in post Balancing out kH and pH
The meaning of the term "p...
06:33 AM - fishkeeper01 quoted Hoppy in post How can I run my diy co2 system
As discussed above, first ...
02:43 AM - birbaliktanki quoted Hoppy in post Co2 introduction into established tank
The amount of CO2 that giv...
12:29 AM - Hoppy quoted Jeff5614 in post algae, co2, and excel
Using low CO2 will keep BBA a...
12:07 AM - scapegoat quoted Hoppy in post Is it okay to put plants in right away in a brand new aquarium?
The thing you can't do suc...
11:43 PM - Hoppy quoted scapegoat in post Is it okay to put plants in right away in a brand new aquarium?
Heavily plant the tank, toss i...
10:20 PM - Hoppy quoted fishkeeper01 in post How can I run my diy co2 system
So in that case could I turn the ...
07:42 PM - Jeff5614 quoted Hoppy in post algae, co2, and excel
...That will kill it, and ...
05:57 AM - fishkeeper01 quoted Hoppy in post How can I run my diy co2 system
If direct sunlight hits th...
05:52 AM - jcmv4792 quoted Hoppy in post Lighting PAR for emersed plants?
...ked for me. Thanks Hoppy, have you ever used ...
05:42 AM - Hoppy quoted josephla in post algae, co2, and excel
Hoppy what is your recommenda...
05:02 AM - Hoppy quoted AbbeysDad in post Need Help Determining What Went Wrong...
I'm having great success (knoc...
01:13 PM - Caelan quoted Hoppy in post A bit different DiY CO2 System
...termination. Thanks Hoppy. I have been using s...
04:31 PM - Hoppy quoted Tyler Jackson in post

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