Groplanner I 640W led grow light test and review

The I series of LED grow lights by Groplanner are good quality and a very good efficiency LED grow light.

I suspected the acrylic cover over the LEDs would reduce PAR output. However this light delivers a very good system efficiency of 2.22 µmols/watt (usable PPF/watt) at 16" or 40cm hanging height in a 5 x 5 (1.5M x 1.5M) grow area and an average PAR intensity of 619 µmols/m²/sec which is a good performance level.

On board dimming whihc can be daisy chained for multiple units

I am happy to highly recommend this 'I' series of LED grow lights from Groplanner

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[nxtlvlyt]

I took the acrylic covers off and got 15% more efficiency 🔥

[WatchCLtv]

Literally my go-to for light reviews. Glad you tried this one out, I've been seeing their lights around lately.

Great stuff man!

[SpywareEverywhere]

I'm pretty sure that you could beat the 2.22 PPFD if you removed the acrylic covers. At 1:27 you can see the diodes reflecting back up off of the plastic. It's nice to have the protection but I would take them off. It might mess with the warranty, so be aware of that.

[MikeParentLeap]

You’re the Gold Standard regarding light information. 👏👏👏

[apeacefulgrower]

Nice lookin light, great review as Always 👍👊

[kenjido]

Even a greater deal at $265 with tax just got another to run 2 in my 4x8

[winstonpratt]

With 756 diodes in every 150 quantum board on the O series I think I would go that route 😀😄
So 4 of those together or even 6 would go super hard I would imagine

[craigengelman]

for what this light WAS its to bad it was so dim . dec 2022 these were $240 and 2 weeks later gone . i got lucky and got the square ones with the pot not the app . they were sold for 2 weeks at $44 each i got 8 of them now . its feb 2023 and they are at $60 on that jungle site . fyi i had to add 2 sunblaze41 with a 10k / uv bulb to make the lights work 100 percent . the fixture was $20 and bulb was $15 each . i had 3 marshydro ts1000 and now this set up my plants are growing like crazy !

[Harleyguy]

Link to the 640 on Amazon not working. Only shows up to 600w light. Good review as usual. Thanks

[maddpharmer]

Shane thanks for the review I just wanted to let you know I’ve been watching for a few years now and every light review you put out I try to watch even if I’m not in the market for a light Just to obtain a little extra knowledge thanks for all your hard work the community is lucky to have someone with such a reputation Dropping knowledge on the weekly

[nilepollard]

I use the gp100w o-series atm, works great

[williamyoung]

I'm splashing out on my first two led's this week, Amazon's draining my bank account, slowly but surely 🤣🤣it's all in a good cause, once it's up it'll be earning it's keep😜

[tgitsmydad]

Wow the par chart and thus the average par was higher and better with the cheaper and more unique Alibaba light for only $420.00 US. That's why we love your honesty Shane.

[KpMac]

This light is $300 on Amazon right now

[neihc]

Can you do a review on the Sunraise QB4000? Everyone check out that light and vote this up. That light look like it has very good coverage

[headsandtailsheadsandtails]

Shame they dont deliver to UK, tried entering details on their web site..Since Brexit everything cost a fortune in shipping to UK now..

[winstonpratt]

I would rather see the 600w O series cuz I promise it blast these

[nicolai]

I got the same designed Light from Amazon.eu with 650 Watts and 8 Bars from the sign enlfjoss.. it has no par map but says its up to 2.9umol/j. Its Made with Samsung lm301b diodes and 60 or 80 ir (660nm)
Costs 499.90€ in eu

[mexemsu.g.d.]

Great review. It really seems that the multiple bar led lights are the popular design nowadays! I've got 7 different lights running now. Love to see the difference between them in quality, weight, ect. 👍

[kenjido]

Just got this for $300, couldn't pass it up. Didn't even need a light upgrade lol. But id rather this in 1 side of my 4x4 than 820w of 6 qb