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Wow, really interesting option. I'll consider trying these. But, doesn't it only seem to run cooler because of the internal fan? 1 watt is still about 3.5 BTU that gotta go somewhere, right? @Rocket Soul voltage adj range for the 350-12 is 10.2 ~ 13.8V so I would guess functionality is similar...

Dude whatever you do don't give your address is my advice. A guy on ICmag already was threatened with the law (as motivation to send the light back, I'm sure) and deleted his account. This narcissist bipolar epistar peddler is worse than the pigs and I completely agree with rocket soul.

Throw them in the trash. They are purple, have awful light spread, the efficacy is lower or equal to HPS. It's simply a nightmare to use these lights. edit: Don't forget to salvage the fans, DC drivers and all the other crap stuffed inside those diode coffins

Very inspiring. Thanks for sharing

Well well, looks like Scammie got into another shitshow drama over at the Mag over some fan noise. Always a hoot.

(BTW, Alternatively to achieve this increased output you can get in the ballpark running them at 2.1A, but that reduces efficacy, and won't spread as well as 2 theoretical cobs running at 1.050mA. So that's why I think your best option is to go for 18 cobs which will take a theoretical 907w at...

I dont get the problem https://www.dropbox.com/s/hqgj9n5qxb9xrei/DIYCOBLEDCalculator.jar?dl=0 if this is too hard to use then you should not be allowed to buy peanut butter at the grocery store. It gives the total PPF output of lights (PPF, expressed in μmol/s), and PPFD (μmol/m²/s - PPF in an...

Use DIY Cob Led Calculator (search for it). 6x3500 at 1400ma: 233ppfd in 4*8 6x5000 at 1400ma: 258ppfd adds up to, Barely Enough, in a 4x8. You'll want to add another 320 or go for 2 480s if you want to flower a 4x8

That's what it has to be in order for their site info to be correct. If you run the numbers you find that they are the same voltage everywhere. I was confused about this and considered mailing them about it.

It may be only 2 plants but that's a really good selection.

Out of curiosity, you want to run 2100mA in the same space? Or you are planning something else with these strips, like running CO2. Because in that 1400mA example it gets some of the best par maps I've seen. I assume you are using 700mA now

Thanks! Website lists them as heatsink-free up to 1400mA. These seem to be the only 301h with 660+730 option in europe so I'm considering getting some

How hot are the strips, and the frame? Got an IR thermometer for measurements? I assume you can touch the frame and the back of the strips comfortably

If it's new and the hydro store is trying to make a buck off it he's probably talking about Mammoth Biocontrol? 5% thyme oil, 90% corn oil, 5% lecithin (surfactant)

If price is an issue - I'm using 3500K and am in the process of adding custom rigid strips from an alibaba manufacturer. 2:1 660nm:730nm ratio like the rapidled thing, custom length. Just contact some led PCB maker and they could make something for you. In my case 150w of strips for less $ than...

Lol, valid criticism, questions and remarks have resulted in censorship, bans and a whole drama. Why does this person do public "R&D" online if they can't handle the heat I wonder. Meanwhile a bunch of mouthbreathers on IC who never used a multimeter and can't keep their grow room clean are...