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\ This show was made for you. They compare the different styles and different levels of pricing for led. They will show you how many generations old the leds are in that Amazon light, just how inefficient it is. Of all the leds on planet earth, those old style diodes are about the very worst.

I've spent a LOT of time searching on there for suitable active and passive and have yet to fine something that is less expensive (with shipping) than buying here :(

The Meanwell ELG 240w drivers sell on Electrosonic for less than $60. If you can design a build around those drivers you will save lots. Some pinfins are avail here from Par-horta: https://www.par-horta.com/product-page/105-mm-heatsink Not sure whether they are just out of stock on the bigger...

In your closet grow thread you said its 2x3 feet. The area you are actually lighting and measuring is just a bit bigger than that Home depot shopping basket I see there

That 28000 lux, not lumens. Big difference. If that light gave you 28000 lux evenly over a square meter (which is what lux means) then you could claim 200lm/w. I'm betting that your grow area is much smaller than that. 200 lm/w is what the very best leds in the world put out. If anyone...

In your other thread you gave the specs: "I purchased 14 10w 800 lumen bulbs" So that means they are 80 lumens per watt (maybe 10-15% more with diffusers removed. So that would be 11200 lumens (plus 15-20%) Not trying to bum you out, that still makes them as efficient as cmh, and they'll grow...

Yeah you've posted this a couple of times. We've got a couple threads here on using led bulbs for growing. The best bulbs (14-15 watt) deliver about 100 lumens per watt with the diffusers on, and maybe 15-20% more once the diffusers are removed. The smaller bulbs (9-10 watts) are slightly...

BOBBY_G goes by @CobKits now since he became a dealer. Lots of info about led bulbs here as well: https://www.rollitup.org/t/got-my-ge-brightstiks.896869/ https://www.rollitup.org/t/led-bulbs-for-plant-growth-which-is-best.948001/

https://www.rollitup.org/t/par-test-of-cobs-vs-samsung-561-boards.942636/

Actually, "3 a light" is less than 1.4 grams per watt. Growmau5 does much better than that :)

If you check out threads here where they measure the light that their fixtures produce (in a grid pattern), you will see that they always have a hot spot in the center. The most uniform design I've seen (with cobs) is an 8 cob fixture, where the cobs are arranged in a 3x3 grid with no center...

Here is the Citizen gen6 calculator: http://ce.citizen.co.jp/lighting_led/en/products2/notice_Simulator_ver6.html There is no calculator for the cxm-22, but in the bottom graph you can see it is a bit better than the citi 1818 in performance, with prob a 2% efficiency gain. Since both chips are...

https://cobkits.com/product/120-mm-passive-pin-fin-heatsink/ 16.65 with RIU discount and holes are pre-tapped, also no need to buy any fans.

Those are some pretty old vids now. If you look at the newer ones he's using pin-fin sinks like pretty much everyone else They cool a bit better and are lighter, and usually make for a bit cheaper build. The smaller pinfins will work great for that size cob driven softly like that, and there...

This kind of makes it sound like there was a lot of bad comments going both ways, which is not what I saw. NV asked his followers to go onto Dago's vids and leave bad comments and unsubscribe, which hundreds did. There were a LOT of very nasty and hurtful things said by NV's fans, but Dago did...

He was on Dago's live stream yesterday from the Build-a-Soil Tomato Festival. He was bouncing around and seemed happy as hell, so I wouldn't worry too much :)

Yeah you quoted me just before I corrected it. I received an alert yesterday that he was live streaming, when I tuned in I noticed that everything was back up

No vids were down yesterday for some housecleaning. Everything was back up last night .

christina.bringetto probably isn't even a real person. If you google search for "best <insert-any-product>" or for almost any product review, the fist page or so of results will always consist of a bunch of fake review sites like this one. They have a small write-up on each product and then a...