Light for custom 25 gallon AI or Radion? - The Planted Tank Forum
 
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post #1 of 12 (permalink) Old 05-25-2019, 05:20 AM Thread Starter
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Light for custom 25 gallon AI or Radion?

I am having a custom 25 gallon tank made. 24" x 16" x 15.5" high

I purchased a AI prime freshwater but was wondering if I should return it while I can to buy the Radion freshwater xr15.

I know the AI freshwater will just cover my 24" width but figured I could lift it a few more inches to get even light to the edges of the tank. The radion has a 36" spread and more leds

Going to grow mostly a carpeted tank Iwagumi style.

What are your suggestions, anyone using these lights?

Thanks

Last edited by BeastlyFern; 05-25-2019 at 03:45 PM. Reason: typo
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post #2 of 12 (permalink) Old 05-25-2019, 08:20 AM
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I have 2 36" (A UNS 90U and a 22g long) tanks with a pair of AI Primes over each. They're really nice lights for the wi-fi control but not needed for such a shallow tank. You will have dim areas on each end if you just have the one. You can use that space for low light plants but I'd consider just using a nice strip style light like a Twinstar etc. A Radion would be way overkill for that tank unless you were going reef.


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post #3 of 12 (permalink) Old 05-25-2019, 11:06 PM
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You can get set up with 2 bulb T5 high output fixture that will cover your tank perfectly with better light, as much Par, and you can experiment with bulbs to change the color to your liking. All for less than $100.
Those single point fixtures will have lots of spill over light and create shadows in parts of your tank. They best for square tanks. Also, if you read this site you find that most LED lack the necessary red spectrum.
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post #4 of 12 (permalink) Old 05-26-2019, 03:38 AM
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Quote:
Originally Posted by BeastlyFern View Post
I am having a custom 25 gallon tank made. 24" x 16" x 15.5" high

I purchased a AI prime freshwater but was wondering if I should return it while I can to buy the Radion freshwater xr15.

I know the AI freshwater will just cover my 24" width but figured I could lift it a few more inches to get even light to the edges of the tank. The radion has a 36" spread and more leds

Going to grow mostly a carpeted tank Iwagumi style.

What are your suggestions, anyone using these lights?

Thanks
If you like what you see w/ the AI no need to go UP to the Prime.
The 50 targeted watts of LED's is fine for your tank..

Height wise I'd start at 10" off the water line making it 24" to the floor..
That's really only a 17" entry cone but covers f/back at the water line w/ 3 1/2 "short"..l and right is a bit short .
If you are anxious to spend money.. 2 AI's vs Radion makes more sense..about $400
spectrums not an issue though some feel it's a bit too yellow.
Shutting off the green channel and slightly dimming the cool white should cut the yellow look .

Quote:
With a spread of 24" x 24", the AI Prime« Freshwater has a peak PAR of 86ÁMol at a depth of 24 inches, The AI Prime« Freshwater comes standard with 80 degree lenses
Radion would not just be a light replacement but most also buy the controller..

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Last edited by jeffkrol; 05-26-2019 at 03:55 AM. Reason: edit
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post #5 of 12 (permalink) Old 05-26-2019, 04:25 PM
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Lower warm white, increase the cool white if you want less "yellow". Raise it a bit and you are still likely to run it way under 100% on whites.

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post #6 of 12 (permalink) Old 05-27-2019, 12:01 AM
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Originally Posted by OVT View Post
Lower warm white, increase the cool white if you want less "yellow". Raise it a bit and you are still likely to run it way under 100% on whites.

you would think wouldn't you..
problem is "theoretically" CREE's cool whites are more yellow than CREE's warm whites w/ a more orangy tone..
Granted a bit theoretical..
This is the basis..


Quote:
* MIXING LIST
----------------------------------------
Cree XP-G CoolWhite (5000-10000K) [120░] x4
Cree XP-G WarmWhite (2600-3700K) [120░] x4
Cree XP-E Blue (465-485nm) [120░] x1
PhilipsLumileds Luxeon-Rebel DeepRed (650-670nm) [120░] x0.2
----------------------------------------

* SIMULATION DATA
----------------------------------------
Luminous flux : 1,029 lm
Radiant flux : 3,604 mW
PPF : 16.2 umol/s
TCP : 5990 K
CRI : 96
λp : 659 nm
Color : #FFD1D0
----------------------------------------
y SPECTRA 1.0β @ 1.023world
http://spectra.1023world.net/[/url]

https://www.color-hex.com/color/ffd1d0


Note dimmed cool whites no green



Granted diodes aren't "exact" matches..and had to use phillips deep red for CREE photo red. (need to add that one)
Then tempered red spike..
SPECTRA

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post #7 of 12 (permalink) Old 05-27-2019, 03:30 AM
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@jeffkrol, that's wild - my brain must be re-interpreting what my eyes see. Still, good to know.

When I bump CW over WW the tank looks more brighter, cooler, with more blue. I personally prefer "tannin" / tea look and set my AI accordingly. myAI app has K / individual LED control - I'll move WW / CW to see which direction K moves.
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post #8 of 12 (permalink) Old 05-27-2019, 04:32 AM
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No I'll take your real life over my "ciphering"...


for fun I re-did it using Cree's chart for photo red..
all have a range of acceptable wavelength max..photo red chart had 655
ai chart shows 665 -ish as an example.

will get back to that in a bit.
I can get a lot closer w/ the CREE photo red to the posted spectrum of the AI "EXCEPT"
the green/yellow balance.. always favors green over yellow.
and the blue =red peak never happens.. blue is always much higher..

soooo..so much for the early calc.. and as I stated earlier (I think) diodes aren't exact..
It was odd to me but it was what it was..
It was worth a shot.
Never really "warmed" up to CREE whites..

BTW published spectrum of g2 and g don't show any differences really.
5000-8300k is the range for g2's though
5000-10000k for the g

OK finally re-did the chart.. Still shows shutting off green and lowering the cw will push tone to a slight magenta..
decreasing ww will push you up scale to blueish..

One thing:
What k value does the sftware state when all channels are on full?
Estimates say about 5700k..

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Last edited by jeffkrol; 05-27-2019 at 04:59 AM. Reason: edit
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post #9 of 12 (permalink) Old 06-03-2019, 12:17 AM
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Quote:
Originally Posted by jeffkrol View Post
No I'll take your real life over my "ciphering"...


for fun I re-did it using Cree's chart for photo red..
all have a range of acceptable wavelength max..photo red chart had 655
ai chart shows 665 -ish as an example.

will get back to that in a bit.
I can get a lot closer w/ the CREE photo red to the posted spectrum of the AI "EXCEPT"
the green/yellow balance.. always favors green over yellow.
and the blue =red peak never happens.. blue is always much higher..

soooo..so much for the early calc.. and as I stated earlier (I think) diodes aren't exact..
It was odd to me but it was what it was..
It was worth a shot.
Never really "warmed" up to CREE whites..

BTW published spectrum of g2 and g don't show any differences really.
5000-8300k is the range for g2's though
5000-10000k for the g

OK finally re-did the chart.. Still shows shutting off green and lowering the cw will push tone to a slight magenta..
decreasing ww will push you up scale to blueish..

One thing:
What k value does the sftware state when all channels are on full?
Estimates say about 5700k..
App says 9k when all channels are at 100%.


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post #10 of 12 (permalink) Old 06-03-2019, 02:10 AM
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Originally Posted by Botia dude View Post
App says 9k when all channels are at 100%.

Hmmm. that's actually pretty hard to do w/ that diode layout..
Cool whites need to be really cool like 13000k.
Pretty confident in saying 7/13th of the diodes come in around 5200k..(red,green,blue, warm white(assuming they are around 3000k-ish))


THAT said, from what I've seen it should be.. just not sure why I can't "get there" (even w/ making the cool white the CREE max of 10000k) or why some complain it's too yellow..


Anyways it is what it is..


soo.. what does it say w/ all off but the cool whites.. (sorry in advance for being snoopy..

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post #11 of 12 (permalink) Old 06-04-2019, 04:57 AM
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Quote:
Originally Posted by jeffkrol View Post
Hmmm. that's actually pretty hard to do w/ that diode layout..
Cool whites need to be really cool like 13000k.
Pretty confident in saying 7/13th of the diodes come in around 5200k..(red,green,blue, warm white(assuming they are around 3000k-ish))


THAT said, from what I've seen it should be.. just not sure why I can't "get there" (even w/ making the cool white the CREE max of 10000k) or why some complain it's too yellow..


Anyways it is what it is..


soo.. what does it say w/ all off but the cool whites.. (sorry in advance for being snoopy..

Every time I change to only 100% CW and then switch over to the kelvin side it changes the settings. The app won't let me get that sort of info for anything but all diodes on at 100%. Perhaps someone else can figure out a way to do it. I'm stumped.


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post #12 of 12 (permalink) Old 06-04-2019, 01:41 PM
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Originally Posted by Botia dude View Post
Every time I change to only 100% CW and then switch over to the kelvin side it changes the settings. The app won't let me get that sort of info for anything but all diodes on at 100%. Perhaps someone else can figure out a way to do it. I'm stumped.
Well that's kind of pointless..


Anyways an eyeball chart..

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