Coffee this morning is pleasant. You never know what direction the conversation will go here on RIU.LOL tbh I've discarded a response involving the subject of kindergarten & diapers.... ähem... I think some of the flames are actually caused by the hangover syndrom alot of smokers underestimate... the laughs n giggles in the evening are offset by an antagonistic neuro-electrical response - causing frustration and sour emotions in the morning if one smokes too heavily... at least, I experience this with me... so from time to time it's good to take a rest until neural tolerance is back to normal again.
The other problem with quantum meters seem that a spikey spectrum seems to introduce a great measuring error:
View attachment 4652328
take it with a grain of salt - as it's just a tiny study with very little hardware.
Ever since @Grow Lights Australia mentioned "Yield Photon Flux" this topic became a rich source of ideas & inspiration. I'm actually wadeing kneedeep in dry college books in order to find out where the potential cut off for Cannabis in the far-red region for photosynthetic photons truly is.
So FR can have help in the acquisition of biomass by contributing photons to photosystem I, initiate hormone/photomorphogenic responses, and also deliver some heat (which may be used to increase a plants metabolism if the growconditions aren't optimal - for example in a stone basement grow....)
But I'm not finding a precise answer, so still looking for clues.... actually these photons 700-800nm theoretically should still be able to excitate/elevate an electron. At least, cyano bacteria can absorb IR photons and do photosynthesis with it - bacteriachlorophyl b has even an absorption peak at 1020nm! (but it may not be the same process as with green landplants)...
But perhaps there is no absorption possible of these wavelengths in the light harvesting complexes of landplants...
To make some sense out of it I've just send Dr. Bugbee a letter about some of these topics so may brain can finally cool down a little XD
perhaps he reads it at the weekend...
Or maybe someone with more knowledge n experience can chime in here... guess the 730nm are a no-brainer but there are also 850nm monos available. Now HPS/CMH cranks out a boatload here. While a high-quality LED emitts twice the PAR umol than HPS - but I'm NOT experiencing that these LED also net twice the weight in harvest. More like 30%. And LED sucks if temps are just somewhere below 20°C...
Maybe IR still has some unexplored properties. As it heats from within, it may be a stimulus? If we look at the sun - there's even much more IR than what a HPS can do, and plants had more than 500mio years to adapt to this radiation.
Then, the natural sun spectrum changes to incorporate more red/darkred signalling the plants to ripen, additionally temps decrease.
All of this is a huge complex bound together and flower induction remains still partially a mystery to even the best scientists ("florigen")
You won't be disappointed in strip lighting.Coffee this morning is pleasant. You never know what direction the conversation will go here on RIU.
Once a day in the morning I have a few ml of infused coconut oil and usually wait several hours before having a smoke.
I have been stubborn about learning the tech side of lighting. This conversation was one of the 1st times I opened up to learning more.
I'm looking to purchase LED for the flower room if I decide to grow next summer. I'm still favoring strips.
While I was following I went to the link from the illustrations Grow Lights Australia showed recently.
I thought you might enjoy the paper it came from. I found chapter 6 interesting.
here’s a quick ppf I did for the L1000
So far I’m blown away by the quality of the light, I’m building a new room with 24 of those. PM me if you need info/price, I can hook you up with my good friend who’s a rep ar Hortamericas, paid 750 instead of 1000
I got lucky and found a place that sells Kontos by the eye dropper.Only did it on specific lower bud sites, there was no other way
All those spectrums posted seem to be for greenhouse/glasshouse daylight supplimentation. Wheres the indoor spectrums?Now that is a pretty shitty spectrum. Using red to pump up efficiency numbers, totally ignoring leaf anatomy and physiology. Yeah let’s just leave 70% of chloroplasts under-utilized.
Just you wait....With this being an LED/HPS thread, are there any HPS users out there who want to argue over which bulb is best? Or how my reflectors aren't correct size for my space. Or how I'm screwing my bulb in incorrectly?
Or are you all to busy "growing your weed" to come throw down?????
Kinda feeling left out of the conversation...
No idea how much extra it costs. I'm at a stage in life where I don't care much about prices.Thank you for buying hortilux, you're helping pay for that shopfull of toys those boys have got and showed off on YouTube.
Just how much could your special gas add to the price of a bulb.
I got lucky and found a place that sells Kontos by the eye dropper.
Everything I read says I can use it all the way to the end with very little negative impact on the plant.
A little expensive but this is enough to last this grow and the following 2 grows with regular preventative treatments.
I love my sprayer.