how much different are 10W LEDS ?

recently i bought some 10w power LEDS.
some blue and cool-white (at that time i only needed them for veg)
i thought i may harm my plants so came here with a new thread ..


so these are my questions:

are there any lens for these LEDS ? like those for 3w leds ?
and how far should 10W's be installed from my plant??
and how many of them will make it work just fine ?

Which LEDs did you get buddy?

this is the picture i just took of them, sorry if its not that clean..

they should be connceted to 12v DC with one '5.6 Ohm 5W' resistor in series.
i had no info on the brand or such information.

al1b said:

this is the picture i just took of them, sorry if its not that clean..
View attachment 2866873
they should be connceted to 12v DC with one '5.6 Ohm 5W' resistor in series.
i had no info on the brand or such information.

Click to expand...

Do you have a ohm meter by any chance? If you do could you measure the resistance of the LED, you might not need those resisters if you know what the actual specs of these LEDs are.

Something like this?
http://www.ebay.com/itm/wdm-1x-Glass-LENS-Collimator-reflector-with-Aluminum-Holder-10-150w-Leds-DIY-/171081649681?pt=US_Night_Lights&var=&hash=item27d542ce11

I recommend using only the reflector, and only if you need to. I haven't made up my mind about these thick glass lenses.

PICOGRAV said:

Do you have a ohm meter by any chance? If you do could you measure the resistance of the LED, you might not need those resisters if you know what the actual specs of these LEDs are.

Click to expand...

i tried to measure the resistance but my ohm meter (digital) didnt show anything...
the seller on the shop told me to light em up with resistors

Bumping Spheda said:

Something like this?
http://www.ebay.com/itm/wdm-1x-Glass-LENS-Collimator-reflector-with-Aluminum-Holder-10-150w-Leds-DIY-/171081649681?pt=US_Night_Lights&var=&hash=item27d542ce11

I recommend using only the reflector, and only if you need to. I haven't made up my mind about these thick glass lenses.

Click to expand...

thx for ur useful link,

still i have no clue how far should be these LEDs from my plant :-/

al1b said:

still i have no clue how far should be these LEDs from my plant :-/

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I am using 100watt~ LED arrays and I have had them about 8-6 inches away, that's about as close before mine start to burn the leaves.

Point it at a wall in a dark room, see what the spread of the light is and adjust from there.

What form of cooling have you provided for these multichips?

PICOGRAV said:

I am using 100watt~ LED arrays and I have had them about 8-6 inches away, that's about as close before mine start to burn the leaves.

Click to expand...

so guess i should run mine and fix the distance as close as possible but it wont burn leaves,,..

Bumping Spheda said:

Point it at a wall in a dark room, see what the spread of the light is and adjust from there.

What form of cooling have you provided for these multichips?

Click to expand...

they are installed on one thick piece of Alminium that has heatsinks on it... fresh air comes in from bottom of my box.. and leaves it up the alminium plate i just told. it helps me a lot to keep the temprature near the point i want .

al1b said:

so guess i should run mine and fix the distance as close as possible but it wont burn leaves,,..

Click to expand...

I started mine about 4-5 feet away and let the plants grow up to the light.

10w multichips? You can get them pretty much touching your plants. Not a problem.

thxx guys. ive bougth rest of the chips and as soon as i find some free time, im gonna make my panel and post out pictures and results ...
RIUs been my guide many times

just have in mind that bringing the led closer to the plants may not give optimal mix/spread of light.. my advise, test out with different distances.