View Full Version : Grow light dilemma -- is this a con or just ignorance on my part?!

11-01-2010, 04:56 PM
I have received my first grow light! The specs for this panel light is:
LEDS: 0.5 WATTS EACH (112 total)
LUX: 4200-4500
The product description read "10 times brighter than ordinary 225 LED panel"

Being a skeptical person and seeing that the light (all red) is not that bright, I made some tests with an energy meter.

Results as follow:

LUX: hardly any movement but my meter is not very good!
AMPS: 0.15
I then divided the 7 amps by the number of leads (112) and it gave me 0.06 amp per LED (and not the claimed 0.5w per LED).


I am thinking that what I bought is not what was described! Yet on the other hand perhaps that what I measured is different than whats coming out of the LEDS! Is power input different than power output? I believe that if the panel is using 7 watts then the out put should also equal that! Any advice is greatly appreciated!


01-03-2011, 12:44 PM

Maybe you could pop a link in for folk to see the description of this LED grow light, although i would say that 50 watts is a little ambitious, even for LED's

01-30-2011, 07:25 AM
I would be willing to guess those stats about the product were incandescent or other lighting equivalent. LED's produce a lot of light for the input amperage. Personally I would never use a light that low of a wattage for growing indoors. For my experiment I am using 2 150 watt incandescent equivalent CFL's, and thats for 1.5X1.5x3 ft room

02-17-2011, 11:48 AM
The claim of it being 10 times brighter than an ordinary 225 light panel may be true. I purchased several 225 LED panels before I knew what I was doing and they're pieces of crap to put it bluntly. That said, it doesnt necessarily mean that what you have is any good, as 10x garbage can still be garbage.

Do you have a pic of it or the source perhaps?


02-17-2011, 02:41 PM
If the panel is drawing 7 amps, at 120 volts, that would be 840watts... volts times amps = watts... Something is up? I bought 2 - 400 watt metal halide fixtures and 2 extra bulbs for 50 bucks off of Craigslist. You will get a sunburn if you work under them for too long...


02-18-2011, 06:12 PM
What's the voltage of the lamps?