My diy Led light

Hello guys, this is my diy led light. The tanks is 40x25x25 (cm).
Leds are 5 Cree XP-G R5 6500°K, powered by 700mA constant current.
Each led is attached on 3-5W heat sink and each heat sink is attached on aluminium bar.

The plant's are:
- Tenellus
- Hemianthus Callitrichoides
- Moss

The tank:


Tank + Leds




Leds detail:


Ciao ciao Christian

that is pretty slick. nice work

man!! that looks like a off the shelf product!! nice work!!

Hi guys,
the my diy light led is incredible.... Explosive plant's growth. Zero algae.
Daily ADA fertilization :
- Bright K 1 ml
- Step1 1 ml
- Special light 1 ml
- Green gain 1 drop

Ciao Christian

Sweet light!
Could you explain/say more on why you choose those lights, where you bought them and how you put them together?
Looking for some DIY LED's for six 200L (100*60*50H) aquariums really liked these!

This is a phone-photo when i connected leds:


Soon i post more photos and details on the components used to build the led light :tea:
Bye Christian

That would be great!

Yes very impressive! Been wanting to do something like this but just dont feel like I have quite enough info yet or that "Perfect" design I am looking for.

Can't wait til for more pics.

Ciao guys,
here are new pictures...

- Components:
1 - Heatsink buy here: XLED.it - Dissipatori di calore in alluminio per LED, pasta termoconduttiva, adesivo termoconduttivo
2 - Cree LEd buy here: XPGWHT-L1-1B0-R4
3 - Thermal compound
4 - Aluminium bar 30x15x1 mm



- Final mount



- Supporting detail:



Ciao ciao Christian

Thanks for the picture, explains a lot.

But a couple of questions:

The Cree Led's you are using, they are chosen with growing plants in mind? Have tried to look for information why people uses these led's vs others.

Any reason why you didn't use 'optics' ?

> The Cree Led's you are using, they are chosen with growing plants in mind?
> Have tried to look for information why people uses these led's vs others.

This light is an experiment!
Yes i choose this led with growing plants in mind!
The CREE are accompanied by their datasheet, available on the site CREE.
The Chinese led, although very cheap, are often without the proper documentation.
The gradation color is equal to that of my previous lamps: 2 Solaris Wave freshwater 18 Watt 6500 °K


> Any reason why you didn't use 'optics' ?

The tank is high only 25 cm and the lamp is close to the water surface so I deemed unnecessary use the lenses.
The LED emits light with an angle of 125°, so with a small distance between water and lamp all the light ends in the tank.
Surely with larger tanks or lights farthest from the water surface the lenses become necessary!

The idea of using LEDs to illuminate the aquarium was give me by the following threads(the site is in Italian language...)

Forum

BizetaShop - Acquario illuminato con LED - di Roberto (talos)

Cablare un profilo T88 con moduli LED della BizetaShop - by Talos

The results speak for themselves ... Try is believing ...

I am available for other clarifications

Ciao Christian

Ciao guys,
i started the journal tank... here:

http://www.aquascapingworld.com/for...15-my-nano-tank-my-diy-led-light-journal.html

Ciao Christian,
il tuo progetto e' interessante davvero!!(ottima la vaschetta ed i suoi progressi). Io ho una vasca dalle dimensioni simili (devo dire e' piu' alta), e appena riallestita ed utilizza 2 t5 wave da 18w.
Vorrei provare a utilizzare i led, come hai fatto tu. 5 led per sostituire 18w di t5 corretto? La spesa e' stata di circa 50-60 euro o sbaglio?
GRazie

Hi Christian,
your tank project is interesting me a lot!!!(and i must tell you, good work progression on your tank).
My tank dimensions are similar to your tank, and i use also 2 18w t5 wave lamps; so now i would like to try led light as you did on your tank,..so only 5 star led to replace 2 18w t5 wave lamps? An the total cost for your diy led light has been 50-60 euro? is that correct?

Ciao grazie per i complimenti. Io alimento i led con una corrente di 700 mA. Con questa corrente ogni led emette circa 260 lumen. Seguento il seguente schema devi calcolare, in base alle piante che coltiverai, i lumen necessari alla tua vasca:

-- per acquari con piante poco bisognose di luce: 30 Lumen per litro d'acqua
-- per un'illuminazione media : 40 Lumen per ogni litro d'acqua
-- per piante molto bisognose di luce:50 Lumen per ogni litro d'acqua

Per esempio, i miei 5 led emettono in totale 260 x 5 = 1300 lumen. In vasca ho un rapporto lumen/litri=1300/25=52 adatto per tutte le piante.

La spesa finale che hai indicato come sostenuta è corretta... Tra i 50 e 80 euro..

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Hi and tank's for compliments. I power the LEDs with a constant current of 700 mA. Each LED emits about 260 lumens.
You must calculate the required lumens for your tank looking the following diagram:

-- For plants that require a low light: 30 lumens per liter of water
-- For plants that require a medium light: 40 lumens per liter of water
-- For plants that require a high light: 50 lumens per liter of water

For example, my 5 LEDs emit a total of 260 x 5 = 1300 lumens. In the my tank I have a relationship lumens / liter = 1300 / 25 = 52 suitable for all plants.

Yes!! The total cost was about 50 - 80 euro...

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Ciao ciao Christian.

Yes Garuf. You're right.
Unfortunately most lamps report only the watts and lumens.
Furthermore, I do not have a PAR meter (also because it is usually an expensive instrument).
Mine was just a very Approximate calculation to determine the number of LEDs to illuminate the tank...

Ciao ciao Christian

can u show me how to connect the cable inside the alumunium bar?
thx

Ciao freashmilkfish, this is the electric connnection into aluminium bar. The leds are serial connected.

If you have additional questions I'm here.