So I made this diy grow light having 8x2700k 3w leds and 22x4000k 3w of these chinese leds https://www.ebay.ca/itm/254626662288?hash=item3b48ee8790:g:IYoAAOSwkJ1e6Cem cooled with a chunky heatsink. The array consumes ~90watts from my power supply and I ran it a week straight to see if it would survive. The light did survive and when I approach my hand to the lights I feel heat from the light. My question is would my light's yield be comparable to for example https://www.amazon.ca/Grow-Light-Spider-Farmer-Spectrum/dp/B07TSBCRL8/ref=sr_1_8?dchild=1&keywords=quantum+board&qid=1628634113&sr=8-8&th=1 as their chips(LM301B) only consumes 0.2w each and has 200 of them making its consumption only 40watts ? Also why do they advertise their light 1000w ?
Led power ratings erroneous ?
- Thread starter BongWoter
- Start date
Tracker
Well-Known Member
Welcome to RIU.
The spiderfarmer board you linked to specifies 100w power consumption.
I suspect that lm301b diodes are more efficient than the chips you used for DIY. While your effort is commendable, your final product most likely does not outperform the spiderfarmer.
The "1000w" naming convention issue is pervasive in LED grow lights. Don't ever consider the name or "equivalent value" to be meaningful. Look at the specs of power consumption, brand/model/number of diodes and brand/model of driver...among other specs.
Good luck! Peace
The spiderfarmer board you linked to specifies 100w power consumption.
I suspect that lm301b diodes are more efficient than the chips you used for DIY. While your effort is commendable, your final product most likely does not outperform the spiderfarmer.
The "1000w" naming convention issue is pervasive in LED grow lights. Don't ever consider the name or "equivalent value" to be meaningful. Look at the specs of power consumption, brand/model/number of diodes and brand/model of driver...among other specs.
Good luck! Peace
cobshopgrow
Well-Known Member
you need to see how much PPFD, usable Photons, per Watt you get.
i asume your 3W noname diode are more like 1.X PPFD per Watt and the LM301B are closer to 3 PPFD per Watt.
i asume your 3W noname diode are more like 1.X PPFD per Watt and the LM301B are closer to 3 PPFD per Watt.
CWF
Well-Known Member
Yeah, I don't go by power, I go by PPFD as above. Power, to me, is what you pay for the light, I mean, what it consumes in watts, from the wall while operating - not how much light you get. Power comparisons to HID (usually) are just ball-park at best, marketing at worst. Show me the measured PAR map, please. Just my humble opinion only.
It's not really correct to say the lm301b consumes .2w. LEDs don't have a specific power, it depends on the applied voltage and the current drawn,
it appears to be .5w per chip on the spider farmer. Datasheets show the current they are tested at and usually list a recommended maximum.