[PetFlora]

The easiest way is to not buy the dumb R/B leds in the first place, which was never for mj, a fruiting plant

Quality white spectrum diodes have been available for ~ 2 years. They alone are 'full spectrum'

Note the smaller plant has 2 BML light bars with a mix of white, plus a few 450s and 660s to amplify those nms

[BagAppeal]

I would say the easiest way to fix this is to get the method seven led lens for camera..

All the best

BagAppeal

[HydroGrowLeds]

Originally Posted by PetFlora

The easiest way is to not buy the dumb R/B leds in the first place, which was never for mj, a fruiting plant

Hmm, your statement contradicts almost every scientific study, journal or test ever done with red and blue LEDs. White light was never developed for growing plants - it was developed so humans could see things better at night and have a deterrent for thieves. It saddens me you would try and teach people the opposite of scientific fact.

[HydroGrowLeds]

I agree with BagAppeal - if you want a good option then buy a pair of glasses from Method 7 and tear out a lens to put over your camera lens. This will correct the color on almost any LED light.

Otherwise you can get one of our new G4 spectrum lights - these lights photograph perfectly. The color for the human eye and camera is far superior to HID or T5. Not to mention the spectrum is even more dialed in for Cannabis.

[PetFlora]

Originally Posted by HydroGrowLeds

Hmm, your statement contradicts almost every scientific study, journal or test ever done with red and blue LEDs. White light was never developed for growing plants - it was developed so humans could see things better at night and have a deterrent for thieves. It saddens me you would try and teach people the opposite of scientific fact.

Apparently you have conveniently forgotten about Apache Tech, A- 51, which are either all white, or primarily white LED companies.

BML SPYDR 600 I just completed a fine grow with it in July is 95% white (6500/5000/3000) with a touch of 450 and 625

Your memory also seems to have conveniently forgotten the fact that mj has been grown for decades under white HID/HPS

Buyer beware of R/B BS

2 pics of Blueberry Cheesecake placed under S600 on 8/9 and how she looks today (No special filters needed to take these pics)

[HydroGrowLeds]

PetFlora - you forget that white LEDs have approximately 1/3 the PAR output of R/B. So yes, of course white light can grow plants! It has red and blue in it, just not enough (thus why you are supplementing with extra red and blue). Why rely on a light that needs 3X the watts to make the same PAR? Just because someone jumps off a bridge doesn't mean it's a good idea or you should too... But if you do make sure you have a bungee cord (ie: your red and blue supplementing LEDs)


And FYI - You don't need phosphor coated LEDs to make white or to get perfect photos with no color filters. All you need is the right RGB Spectrum which supplies the plant everything it needs without any of the wasted "filler" light in white LEDs. This is cannabis under our G4 spectrum with no filters:



And here is what the plants look like under HPS (~2700K):

[rives]

Originally Posted by HydroGrowLeds

Otherwise you can get one of our new G4 spectrum lights - these lights photograph perfectly. The color for the human eye and camera is far superior to HID or T5. Not to mention the spectrum is even more dialed in for Cannabis.

An overly broad generalization. HPS is not the only HID, and MH is used for sports lighting because it closely emulates natural light. While that G4 spectrum is vastly improved over r/b, it still has excessive red in it.

315 watt Philips Elite Agro @ 3100k -

[PetFlora]

https://www.plosone.org/article/info%...l.pone.0099010

The most electrically efficient colors of LEDs, based on moles of photosynthetic photons per joule, are blue, red, and cool white, respectively (Figure 4), so LED fixtures generally come in combinations of these colors. LEDs of other colors can be used to dose specific wavelengths of light to control aspects of plant growth [12], due to their monochromatic nature (see [13] for a review of unique LED applications). Ultraviolet (UV) radiation is typically absent in LED fixtures because UV LEDs significantly reduce fixture efficiency. Sunlight has 9% UV (percent of PPF), and standard electric lights have 0.3 to 8% UV radiation (percent of PPF)[5]. A lack of UV causes disorders in some plant species (e.g. Intumescence; [14]) and this is a concern with LED fixtures when used without sunlight. LED fixtures for supplemental photosynthetic lighting also have minimal far-red radiation (710 to 740 nm), which decreases the time to flowering in several photoperiodic species [15]. Green light (530 to 580 nm) is low or absent in most LED fixtures and these wavelengths better penetrate through the canopy and are more effectively transmitted to lower plant leaves [16]. The lack of UV, green, and far-red wavelengths, however, should be minimal when LEDs are used in greenhouses, because most of the radiation comes from broad spectrum sunlight.

Make sure to click on the graph in the Flat Plane Integration section.

[HydroGrowLeds]

https://onlinelibrary.wiley.com/doi/1...00057/abstract

A fun read on why it is important to balance specific wavelengths and pair them together for optimal growth rates/yields:

Far-red (FR) light is crucial for the efficiency of photosynthesis and photomorphogenetic activity. This study investigated whether FR light at different wavelengths affects the Chlorella vulgaris biomass growth rate and chemical composition. For this purpose, FR was added to the blue–red (R) light at the wavelength of 720 nm (BRFR720L [blue + R + FR 720 nm light]) or 740 nm (BRFR740L [blue + R + FR 740 nm light]). BRFR740L allowed both higher growth rate and increased amount of total biomass compared to BRFR720L (blue + R + FR 720 nm light). The chemical composition of C. vulgaris biomass, analyzed by FT-Raman spectroscopy on lyophilized cells, significantly correlated with the applied FR component. The differences in lipid, carotenoid, and chlorophyll contents were particularly evident and all were higher in BRFR740L. Fluorescence emissions spectra of C. vulgaris cells were measured in the range 420–800 nm in the cuvette equipped with a magnetic stirrer preventing sedimentation of the cells during measurement. In the blue–green range (420–650 nm) fluorescence emission spectra indicated that changes in the chemical composition of phenolic compounds in the algae depended on the wavelength of FR used in LED matrices. This work showed that the use of FR of a wavelength 740 nm in the bioreactor's light source significantly improves biomass production of C. vulgaris cultures.

Hydro Grow has been using 740nm since our second prototype in 2008.

Seems like you also forgot this very in depth study on the relationship of green, red, far red and blue light: https://docs.google.com/file/d/0B5gZ...lUS3dtTUk/edit

[PetFlora]

Originally Posted by HydroGrowLeds

https://onlinelibrary.wiley.com/doi/1...00057/abstract

A fun read on why it is important to balance specific wavelengths and pair them together for optimal growth rates/yields:

Far-red (FR) light is crucial for the efficiency of photosynthesis and photomorphogenetic activity. This study investigated whether FR light at different wavelengths affects the Chlorella vulgaris biomass growth rate and chemical composition. For this purpose, FR was added to the blue–red (R) light at the wavelength of 720 nm (BRFR720L [blue + R + FR 720 nm light]) or 740 nm (BRFR740L [blue + R + FR 740 nm light]). BRFR740L allowed both higher growth rate and increased amount of total biomass compared to BRFR720L (blue + R + FR 720 nm light). The chemical composition of C. vulgaris biomass, analyzed by FT-Raman spectroscopy on lyophilized cells, significantly correlated with the applied FR component. The differences in lipid, carotenoid, and chlorophyll contents were particularly evident and all were higher in BRFR740L. Fluorescence emissions spectra of C. vulgaris cells were measured in the range 420–800 nm in the cuvette equipped with a magnetic stirrer preventing sedimentation of the cells during measurement. In the blue–green range (420–650 nm) fluorescence emission spectra indicated that changes in the chemical composition of phenolic compounds in the algae depended on the wavelength of FR used in LED matrices. This work showed that the use of FR of a wavelength 740 nm in the bioreactor's light source significantly improves biomass production of C. vulgaris cultures.

Hydro Grow has been using 740nm since our second prototype in 2008.

Seems like you also forgot this very in depth study on the relationship of green, red, far red and blue light: https://docs.google.com/file/d/0B5gZ...lUS3dtTUk/edit

Not wanting to play tit for tat.

My point that mj responds BEST to a full spectrum is scientifically validated, and not just in that one article

I'm done here