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yeah but what kind of blue diode is the question here... a 435nm one or a 450nm one? There are many good arguments for using green light, and personally I'm more in favor of green light... the green light is what makes it white to our eye. I don't think using 2700k diodes is going to be better...

If there is, I'm sure it's proprietary for the time being.

cant find it right now, but the testing is done by samsung themselves. And I'm also pretty sure that research points to the fact that plants do not really care that much about color temperature, as long as you have the correct wavelengths within the PE spectrum.

Ha! Your kidney is? How much?

Well, first the EVO diode is more efficient. It also brings benefits in terms of higher flavinols compared to the 310b/h. Also, I think some of the independent UV and near UV research done here alludes to the fact that a 437nm pump vs. a 450nm pump is going to get you higher cannabinoids. In...

No I'm saying that I suspected that HLG tried to claim the LM301H EVO as their own diode, but ended up with what they have in their Tomahawk instead.

Not talking about the H, I'm talking about the H-EVO.

If you see the blue spike for the diablo I could be wrong but the change from 5mm heatsink to 2.4mm or whatever is indicative that they are using the latest generation samsung diodes which have a different casing material. That would be true for H and H EVO. They have also switched to Osram...

exactly, they're saying they use the lm301H EVO diodes aka 437nm pump... but probably in combination with lm301h diodes at 450nm... pluss 33% extra red.

Uhm, I'd be hard pressed if they weren't using 4000K lm301H or LM301B EVO diodes, and 4000K EVO diodes. You would see a clear difference between a mint white and a 4000K diode, and for sure a mint white diode and a 3500K diodes. My guess is a 450nm diode and a 437nm diode around 4000k. The reds...

I remember getting some insanely good weed from malaysia when I lived in singapore as a teenager. I've never gotten close to anything that even remotely resembles it. It was damn near psychadelic. I guess it's like most stuff that gets produced on scale, it becomes bland and stripped of its...

I've done some research and concluded that Parylene is the best conformal coating for LED PCB. I will not say which type or how either.

I'd say the best spectrum for flowering depends on who is growing the bud. 4000k with 600nm reds will be more than enough for the vast majority of growers. You would assume around 5% far red from that spectrum, and with newer horticulture whites you are getting the near-uv effects. Besides...

Correction 234lm/w. Here is that datasheet from Osram: https://www.mouser.com/datasheet/2/588/Osram_GWQSLMS2_HM_EN-3236077.pdf The Osram datasheet says... Photon Flux Efficacy: typ. 3.15 umol/J @ 5000K - Photon Flux: typ 0.552 umol/s @ 5000K The LM301H EVO is 0.56 μmol/s, 3.14 μmol/J - just a...

I notice that both Samsung and Osram are now offering white diodes with CRI 70. The Osrams came out not long ago and are described 'to increase horticulture efficiency' which is 237lm/w. Not sure what Samsungs are at CRI 70, but they are definitely more efficient than the 80's? I was under the...

Looking tasty!

Dude 500$ is cheap to compared to what breeders pay on auctions... I agree the price is ridiculous, but it's big business to have the right strains and a small initial investment if you want to 500 isn't that much if you can get a phenotype to last you with years of profit ... Most 'premium"...

I hear yah, but supply and demand does that.

I know some diehards that rave about it. Kinda spendy 500$ for a pack..

Well shit son, where can I get me some?