https://www.youtu be.com/watch?v=uqrIz2HmyEw
Here’s my independent and sponsor-free guide on how to examine any LED grow light. This video is NOT about pressing you towards a specific brand name or design however rather, offering you the understanding you require to make your own notified purchasing choices. I have actually consisted of some extra notes to supplement the video listed below. As constantly, any remarks or concerns welcome! 00:35 http://www.designlights.org 00:48 PPFD measurements depend on range from source of light. Some rogue makers and resellers take PPFD unrealistically near the light and attempt to pass these off as “PAR” measurements. 01:21 BPF is often called PBF by some makers (specifically, EYE Hortilux). PBAR meanings can differ a little. 04:21 Arize L1000 600W First Generation Greenhouse Top light (PPR spectrum) produced by Present Lighting. https://www.gecurrent.com/indoor-lighting/horticulture-led-grow-lights United States Supplier: https://hortamericas.com/catalog/horticultural-lighting/greenhouse-lighting/l1000-led-greenhouse-grow-light-system/ 04:55 Hellion VS3 700W Variable Spectrum LED by Adjust-A-Wings
Hellion VS3 LEDs06:46 Arize Aspect ML900 600W Business LED https://www.gecurrent.com/indoor-lighting/horticulture-led-grow-lights/arize-ml900 06:53 Phantom PHOTOBIO • TX 680W 100-277V S4 https://www.phantombio.com/products/led-systems/product/photobio-tx-680w-100-277v-s4 07:00 and 09:21 Maxibright Daytime 660W LED https://growwithdaylight.co.uk/product/daylight-660w-led/ 07:14 SANLight EVO 4 https://www.sanlight.com/en/product-series/sanlight-evo-2/ 08:27 nanoLambda XL-500 https://tinyurl.com/yd8rsf98 nanoLambda XL-500A BLE https://tinyurl.com/5n7th7hh 08:45 TELOS MESH https://www.teloslighting.co.uk/mesh/
A A
Awesome choices for overseas but unfortunately cannot find these in the USA if there’s any others yall would recommend
Everest Fernandez
There are so many great choices out there—but a good choice for a multi-array from an America-serving brand that I have used (and love) is called iLuminar — I show their iLogic 8 FS model (with UV and far-red) https://tinyurl.com/2hvs5jrc and I love it. Potted diodes are easy to clean; excellent thermal management and most importantly, the plant response was really good.
A A
@Everest Fernandez Great recommendation, I’ve purchased this light <3
Everest Fernandez
@A A Great choice. Let us know how you get on with it! I think you’ll love it.
Micky Quick
Luuuuuuuvvvvvvv it
Lotus Leaf
Thanks Everest
pghdave420
blurple lights were not all that bad.i had a mars2 400w panel and the plant under it was killer,cons no spread at all,why i ran half hps half led. all these new leds seem to be spread out now,cant wait to grow again one day
Jasmin Burgic
Leave the LED lighting on for 10 hours for 24 days to make it worked
Pedro Galhardas
EPI COB and 3w smd and osram diods, for me the best type of grow lights.
Solux pro have very good lights
mom
wow that was some crazy home footage at the end. Hope you are doing alright. great video!
xd ae
Amazing video, super insightful. Though isn’t ppfd more specific and important? PPF can state output but doesnt say where it’s going so it might just all be in the center instead of evenly spread. PPFD gives a density map of how the PPF is spread out along a 4×4. As shown in the video, it’s more important to check if the corners are evenly distributed. Thus it should be the other way around. If the manufacturer just gives the PPF but has no PPFD map then avoid.
Everest Fernandez
Thanks for your insights Xd. I would argue that PPF comes first—total output—so this is the must-see metric. PPFD maps can be useful for showing the footprint / coverage of the light across a two-dimensional plane at a certain distance from the fixture — it’s just that, if a manufacturer just shows PPFD maps and no PPF, it’s a red flag for me — invariably the distance is much closer than that which is feasible when growing plants in reality — in other words, they measure at 6 – 12″ to show very high PPFD numbers – but the PPF gives all-important context. The other biggie is the spectral distribution. (No point having a super high PPF, or PPFD, if all the light is concentrated in one region of the spectrum.)
While we are on the subject of PPFD, I would like to add a few more points. We measure PPFD using a PAR meter—typically a handheld meter with a silicon photodiode—housed in an acrylic diffuser cap so that all incoming light is spread homogeneously over the photodiode. The amount of electricity the photodiode produces is then converted into a light intensity reading, in terms of micro moles of PAR light per m2 per second. All good, but—by its very design—a PAR meter doesn’t take into account the direction or column density of the light it receives. For example, notwithstanding the spectral differences, there’s a big difference between the quality of light emitted from a 600W DE-HPS and a 600W multi-array LED—the light origin is spread out over thousands of diodes (typically) with a multi-array LED compared to all coming from the same (relatively small) arc tube with a 600W DE-HPS. My point here is that if you add up the surface area of all those 9mm diodes, it will be 2 to 2.5 times more than the surface area of the arc tube.
As indoor growers, we’ve been banging on for years about the importance of getting our lights as close as possible to our canopies, without causing localised over-transpiration stress — proximity is arguably even more important for multi-array LEDs. Your plants are the best PAR meters.
JorgeG
Great great video!!
Everest Fernandez
Thank you Jorge—much appreciated.
Tinmar
Ccol you’re back 😉
Danny Armata
Is the one light you show woth the lm301h and 3 channels the parfactworks ze700 looks just like mine
Everest Fernandez
Yes—comes from the same OEM.
Kenshin Himura
I thought you died. Where have you been?
Weedo
I love you videos and the subtle comedy you add. great narration and personality with very detailed info. keep ’em coming!!
Everest Fernandez
THANK YOU Weedo! I really appreciate your feedback.
Weedo
more videos on sealed environment as it pertains to co2 enrichment and how to use high levels efficiently. thanks!!
SANlight LED
Great, infomative video! Thanks for featuring us!