Good point would need to know more about crankdoctor light. I have 52pcs of epistar reds and uva per strip. There’s been a debate about how effective or impact extended range pad has on plants. I’m going to do a table with strips that’s pushing 20 percent plus and see how it goes
Apogee new sensors
- Thread starter crankdoctor
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crankdoctor
Active Member
It does sound like a lot! Your right about the percentage of added outside spectrums. That’s what I was saying about a chart or? A percentage table I guess would be a better word. Seems like apogee would say something about this. I guess everyone that owns these should do testing and log there info to compare since there’s no formula. Another thing I was thinking is if there’s uv & ir switching and there on same driver that’s going to take away total power. I had geeklight build one for me a few years ago with extended. Leads with all Cree reds that they sell today. So I know it drops some voltage. Just way to many factors as you say. A spectroradiomiter would help. Just more toys A!
I think in one of apogee videos he mentioned more vegetative growth with 10percent far reds. We are close to knowing that for sure uva ir red and far red helps. Yet no definite idea of at what rates is it too much or too little. Or even if it’s worth adding them when money could be directed toward providing a better environment or Co2. I have a 2 tables of a stain that herm a lot(last time growing it)that I’m going to blast with high percentage of 660/730/uva. I’m familiar with the strain under hps and leds so I can’t wait to see if there’s any difference or problems from high wattage of supps
crankdoctor
Active Member
There’s a guy on YouTube that has 480 kingbite or? That has both uv and ir built in and he used them both at same time in preflower and it started to herm on him. Here’s a good study on far red test if you Havnt seen it yet. Great info.
The Cannabis Light Spectrum Illuminated - Part 2: Far-Red
Why is Far-Red light important for the Cannabis Lighting Spectrum? Read more to learn how Far-Red can improve cultivation outcomes.
www.heliospectra.com
Thanks ima check that out, and that’s interesting I wonder what strain he had. Never heard that beforeThere’s a guy on YouTube that has 480 kingbite or? That has both uv and ir built in and he used them both at same time in preflower and it started to herm on him. Here’s a good study on far red test if you Havnt seen it yet. Great info.
The Cannabis Light Spectrum Illuminated - Part 2: Far-Red
Why is Far-Red light important for the Cannabis Lighting Spectrum? Read more to learn how Far-Red can improve cultivation outcomes.
crankdoctor
Active Member
NP. Can’t find the other vid but this guy says he didn’t think it was from light with both on. Good info on start to finish with lm301H uv ir quantam boards and his final thoughts on harvest vid. Here’s a link. There’s 5 vids. Just watch for his captions.
Super plant on YouTube.
Here’s part of his info. I’m going to test one of mine to confirm.
Here’s part of his info. I’m going to test one of mine to confirm.
Attachments
Perfect timing I’m off tomorrow and about to do some tinkering. A quick thing I noticed from my strips that’s getting 100 watts spread across 2 4x4 is the almost 200+ par difference under the strips compared to directly under the qb boards. The difference in par became more profound when I raised the lights. Which makes sense considering 660s+ wavelength. I seen some yellowing at the top of my plants and figured I blasted them with too much light fresh into flower. Now I’m kinda wishing I split this cycle from the beginning and did another table with no strips. I’ll be sure to do that with these upcoming clones
crankdoctor
Active Member
Thanks for the info. Are you using Cree or Osram reds? Please let us know your findings.I think I’m going to see if I can have some strips made 3500k with 660 on a separate driver so I can dim and blast at flower. With all this spectrum hype all white seems rare. Also want to check up to 450nm on It’s own. Anyway if we all share our results we can help a lot of people out.
Epistar, I was planning on buying some Crees and compare but for now I just want to see any substantial difference with varying amounts of supplemental lighting. They are 52 diode strips of reds and 450/730 split 52 diodes. You want to try only 450nm without any added reds? I’ve read convos on here where people suggest focusing on environment and quality white leds and maximum coverage more so then tweaking the spectrum. So I’m focused on figuring out if it’s worth it in my situation to allocate wattage and space on each fixture for strips. Luckily the strain I have running now I’m very familiar with so I’ll be able to tell a difference. In a couple weeks I’ll have clones from skittles that will get lights with straight white and others with reds, and a third table with reds and uva. That’s the experiment I’m excited for
crankdoctor
Active Member
Yea I can’t wait to see what you come up with! I didn’t mean blue by itself. Using small amounts of red Blue with far red at flowering. I have a light that has a few 660 and 450 per strip at 3500k then I have a qb light with ir uv on one side of tent with same but no blue. In between both lights buds were more dense and more resin. Flipped 395 on last few weeks but still not as sticky as blue side same strain. Bruce banner. It’s 40/60. So there was a difference with the blue added. Far red side had more branching at bottom and tops. Both have Cree reds. I’ve been hesitant to buy a strip because they have so many diodes in them. In my mind I think there should only be a few of each wavelength. Just my opinion. Each qb 288 I have has 4 each ir uv per board. Uniformed. Switched. Then the strip light has 3 blue per. And just that small amount makes a difrence. So guess I’ll be making some strips up so i can add and subtract and see what works better and when. There saying hps had up to 30% far red.
crankdoctor
Active Member
I found something interesting you might like to see if you haven’t already!
Here’s a link. Is a good read about far red, better at bottom.
Goodbye from Maximum Yield
In print and online, Maximum Yield is your source for cannabis and cultivation knowledge, with informative grow articles and tips to enhance your life with mmj.
www.maximumyield.com
Interesting read, I think I read it before but a nice refresher. So I think I’ll add some far red only on the end of the day treatment. And the rest leave on the whole cycle time and extend it a extra 10mins after lights offI found something interesting you might like to see if you haven’t already!
Here’s a link. Is a good read about far red, better at bottom.
Goodbye from Maximum Yield
In print and online, Maximum Yield is your source for cannabis and cultivation knowledge, with informative grow articles and tips to enhance your life with mmj.
MidnightSun72
Well-Known Member
if only weed reacted like lettuce.
Bt I do like this videos shows far red photons to count like par photons. Shows theres more to understand about the par spectrum.
crankdoctor
Active Member
Thanks so much for this. Good find!
BonnMac
Active Member
Ha! True!
Growing weed in virtual shade would be great.
The takeaway is though, the university’s studies indicate that all the crops they observed, including weed, responded equally well to far red photons.
Bugbee and his students have changed the game in their findings beyond the traditional PAR measurement.
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crankdoctor
Active Member
Agree far red uv def. Has its uses. Seems like sombody would build a light like some aquarium lights have that changes spectrum throu out the day. We’re comming along with it but with all this tech it seams like it would already be done instead of using timers switches and dimmers on just a few wavelengths to kinda sim the day. And as to the original post I guess the 10 to 20% increase has been proven with that comparison video. Case closed!