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the 3000k "Z" cri pro 9's look like a good base for a flower spectrum.

photophyll looks like crees spin on samsungs evo "mints", great if your only chasing efficiency not so great if you value spectrum.

fek me...

spot on, 10/10...

its absolutely ok to mix spectrums.:confused:

imo mint greens get used to lift efficiency not for the spectral quality. mammoth are using mints plus an emerald green diode.

i have never flowered under the emerald green mammoths but imho there are a gimick. "normal" led's already have ample green i the spectrum, there is nothing to be gained by adding more.

par?, mcree curve?, science ect?...

led bukkake :bigjoint: how many watts?!?!, what sq/ft?, approx cost for lighting?. have you got a spectrometer read out for this?.

like rocket says the only benefit of mixing different kelvin strips is if you are going to run the 2700k and 5000k on different channels. but to do this properly you have to oversize your light a bit, hypothetically if we wanted to build a 2 channel light for a 4 x 4 tent that gave us 1000 ppfd...

are TME UE delivering to the uk again?. i know they stopped after brexit :cry:?.

i have changed my mind i think mammoth are using monos for the greens, been having a play and can more or less recreate mammoths spectrum. it uses samsung mint evo + samsung lm301H evo 3000k + samsung lmb301B 5000k + osram 660nm + osram 730nm + 525nm(green). but it only comes out at an...

samsungs mention of 437nm... https://led.samsung.com/about-us/news-events/news/news-detail-65/

i believe the evo is a 437nm pump, im sure i have read 437nm somewhere in samsungs literature but its also a perfect match for this - hybrid InGaN/AlGaN-CuI blue led, (not from samsung).

there is nothing in either of those papers that suggests adding additional green light to a "typical" white led spectrum is a good idea. the first paper mammouth quotes from is using halogen as the white light source not led, halogens spectrum is extremely red heavy with medium/moderate amounts...

wonder which samsung diode it is?

looks like phosphor converted whites for the greens going by the spectrums.

i cant tell from the available pics if they are mono's or phosphor converted whites for the greens. old mammoth mint evo light. new mammoth mint evo + emerald green. spectrums for both.

yer i totally get why they use the mint evos on their lights (efficiancy), i just dont get why they have added more green mono's?. how efficient are current gen green monos?. yep and im totally on board with the thinking that some amount of green light is beneficial for (deeper in leaf)...