Mau5Capades: builds & grow journal

[cdgmoney250]

I think an equal flux side by side of high and low CRI would be pretty interesting. I'd be curious if there would be noticeable growth differences.

 

[ttystikk]

I think an equal flux side by side of high and low CRI would be pretty interesting. I'd be curious if there would be noticeable growth differences.

It would depend much more on the spectrum distribution than CRI.

 

[cdgmoney250]

It would depend much more on the spectrum distribution than CRI.

Assuming we are comparing the SPD's that were just posted...

 

[ttystikk]

Assuming we are comparing the SPD's that were just posted...

In that case, let the side by sides begin!

 

[nevergoodenuf]

@cdgmoney250 I have a 4000k 80cri going against a 3200k 95+cri. I was surprised to see that the plant under the high CRI looks like it is growing thicker stems and better leaf development. Today is day one of flowering. Both are vegging great, but the 95+ just looks better. Though @ 2' I get 125000 lux on the 4000k and only 85000 lux on the 3200k. If I can get the PAR meter hear I will see what it says. Time will tell if the 95+ is worth the extra cost. Journal is in my sig.

 

[PurpleBuz]

@cdgmoney250 I have a 4000k 80cri going against a 3200k 95+cri. I was surprised to see that the plant under the high CRI looks like it is growing thicker stems and better leaf development. Today is day one of flowering. Both are vegging great, but the 95+ just looks better. Though @ 2' I get 125000 lux on the 4000k and only 85000 lux on the 3200k. If I can get the PAR meter hear I will see what it says. Time will tell if the 95+ is worth the extra cost. Journal is in my sig.

too bad you didn't have a 3000k 80 cri for the comparison.

regardless, nice to see the diffs, keep the data coming.

 

[nevergoodenuf]

I almost went with a 3000k 70cri, but didn't have the 2 extra I needed.

 

[BobCajun]

wrong. you are comparing relative to 100%. But that 100% is far different between the décor series (high CRI) than a 70 or 80 CRI.

and by the friggin way contrary to what you read in plant physiology papers designed to understand plant physiological and biochemical mechanisms, green DOES NOT INHIBIT growth under production light levels. In fact its one of the primary reason HPS out produces a blurple light under full thick canopy conditions.

a typical high cri\low cri comparison in absolute terms:
View attachment 3676736

Yeah the 93 CRI 3000k are pretty much the same as the Decor. Okay, so my advice is to buy the highest CRI of whatever line you decide on. The spectrum is clearly superior.

 

[BOBBY_G]

i dont buy it

higher CRI may or may not be better in all cases. you need to look at the spectrum

HPS is 22 CRI and works pretty great

 

[BobCajun]

@cdgmoney250 I have a 4000k 80cri going against a 3200k 95+cri. I was surprised to see that the plant under the high CRI looks like it is growing thicker stems and better leaf development. Today is day one of flowering. Both are vegging great, but the 95+ just looks better. Though @ 2' I get 125000 lux on the 4000k and only 85000 lux on the 3200k. If I can get the PAR meter hear I will see what it says. Time will tell if the 95+ is worth the extra cost. Journal is in my sig.

Red and blue don't show up as high on a lux meter as green and yellow. Here's a page with a converter. To show what I mean, if you choose "lux to photons" and put say "10,000 lux" in and choose "Grow-lux fluorescent" as light source it shows that you need 300 photons to show up as 10,000 lux. If you choose HPS it shows you only need 120 photons. I don't think Grow-lux is even pure red/blue so it would probably be even worse with red/blue LEDs. I think that's why high CCT and low CRI white LEDs show more lumens in a meter than vice versa. The extra red is showing up as lower lux/lumens than the green/yellow in the other ones.

 

[BobCajun]

i dont buy it

higher CRI may or may not be better in all cases. you need to look at the spectrum

HPS is 22 CRI and works pretty great

The high IR output of HPS increases growth rate by heating up the leaves. That's my theory.

 

[PurpleBuz]

Yeah the 93 CRI 3000k are pretty much the same as the Decor. Okay, so my advice is to buy the highest CRI of whatever line you decide on. The spectrum is clearly superior.

that's still bad advice, max photons first , spectrum second, guess you don't care about light per watt.

 

[cdgmoney250]

@nevergoodenuf
I look forward to seeing your results under ther high CRI chips... Something I've been wanting to test out for some time.

 

[GrumpyT0ker]

I'll bump it up for you! You crazy mad scientist

 

[BobCajun]

that's still bad advice, max photons first , spectrum second, guess you don't care about light per watt.

Well if max photons was the deciding factor then everyone would be using 6500k. I don't see that happening. You just have to take a hit on photons to get the best results, that's all. Or are you one of the countless quantity over quality people?

 

[Growmau5]

@GrumpyToker thanks man, I wasnt sure where to post MY video. This thread seems to be this exhausted argument over CRI, yet no nobody seems to want to put their money where their mouth is, STEP UP AND FUCKING PROVE IT!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

 

[PurpleBuz]

Well if max photons was the deciding factor then everyone would be using 6500k. I don't see that happening. You just have to take a hit on photons to get the best results, that's all. Or are you one of the countless quantity over quality people?

longer wavelengths have more photons for the same amount of light energy.

 

[BobCajun]

longer wavelengths have more photons for the same amount of light energy.

The problem is that blue light, over low levels, reduces dry weight. That's why it's not good to use high blue types of white LEDs. HPS has 5% blue and seems to work well.

 

[BobCajun]

@GrumpyToker thanks man, I wasnt sure where to post MY video. This thread seems to be this exhausted argument over CRI, yet no nobody seems to want to put their money where their mouth is, STEP UP AND FUCKING PROVE IT!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

I'll soon be able to show the effects of using a minus green filter gel on a 4000k cob light, if they ever mail the order. It absorbs much of the green zone leaving a light pink colored light. There is some loss of red and blue too, not too much. I need dimming anyway so the filters will act much like a dimmer while also improving the spectrum. I'm not worried about the inefficiency. It's a small setup. I want to see what a minus green filter does for plant growth. I expect less bleaching will be one result. Here's the output. This one is called Blush Pink but it's the same as half minus green just that it's meant for a different application and is on better quality gel.

 

[Airwalker16]

I'll soon be able to show the effects of using a minus green filter gel on a 4000k cob light, if they ever mail the order. It absorbs much of the green zone leaving a light pink colored light. There is some loss of red and blue too, not too much. I need dimming anyway so the filters will act much like a dimmer while also improving the spectrum. I'm not worried about the inefficiency. It's a small setup. I want to see what a minus green filter does for plant growth. I expect less bleaching will be one result.

Is it a,lens?