Your Grandpa's Weed or is UV supplementation really needed?

[MeGaKiLlErMaN]

Do you plan on starting a lighting company too?

No but when a DE Gavida PRO 1000W puts out 600PPFD (ish) in a 4x4 at 24in... and something puts out a higher PPFD for the same area with less Watts... that means it has a higher output of par light... Not the PPF... Wattage doesnt effect output because you can get the same for around 500-600W. PPF is one spot that you measure PPFD is the whole area averaged out.

 

[churchhaze]

No but when a DE Gavida PRO 1000W puts out 600PPFD (ish) in a 4x4 at 24in... and something puts out a higher PPFD for the same area with less Watts... that means it has a higher output of par light... Not the PPF... Wattage doesnt effect output because you can get the same for around 500-600W. PPF is one spot that you measure PPFD is the whole area averaged out.

If you had 600umol/s/m^2 but only in a 1x1 instead of a 4x4?, is the light is just as good because it has 600umol/s/m^s? Why not? It's because when you talk about average PPFD over an area, it becomes PPF. PPFD is PPF/A... and when you multiply that by area, it becomes PPF.

Average PPFD * A = PPF. (See the units.)

 

[churchhaze]

Wattage doesnt effect output

Wattage (radiant power) is the output. Efficiency = power out/power in.

 

[whitebb2727]

I don't have a right to express my opinion on this? Just to clear things up, this is an RIU thread, not a RM3 thread.

Of course you have the right.

I just looked at the fundraising campaign to help RM3 produce an LED lamp....

"High Quality Bridgelux 3W chips"

Straight up, he's looking to design another ripoff lamp to put on the over-saturated market and he wants you to help him fund the startup. RM3, invest in your own business. There's absolutely no reason for anyone to crowd fund yet another garbage product just for your own sake. Literally, people would be better off if they just donated money directly to your living expenses and didn't bother wasting their time with such a nonsense product. Give the beggar some money, then go buy an HPS lamp.

"say no to blurple", then in the picture you see a 660nm epiled. Complete garbage... Complete lie... Something tells me his kindergarten competitors are going to kick his ass. Verified con man...

No good....

Ah, there's that bitterness and name calling unprovoked.

I knew it would come out sooner or later.

 

[MeGaKiLlErMaN]

If you had 600umol/s/m^2 but only in a 1x1 instead of a 4x4?, is the light is just as good because it has 600umol/s/m^s? Why not? It's because when you talk about average PPFD over an area, it becomes PPF. PPFD is PPF/A... and when you multiply that by area, it becomes PPF.

Average PPFD * A = PPF. (See the units.)

Then do you see that math being worked out here? You only use PPFD when you compare equal size areas. I thought that was a given.


CXB3590DB36V4000K 16 COBS @1.4A ON 1.813 PROFILE HEATSINK
25 SQ.FT. CANOPY 94% EFFICIENT DRIVER @13 CENTS PER KWH
Total power watts at the wall: 831.91
Cobs power watts: 782
Total voltage forward: 558
Total lumens: 154163
Total PAR watts assuming 10% loss: 430
Total PPF: 1947.9
PPFD based on canopy area: 838.68
PAR watts per sq.ft.: 17.2
Cob efficiency: 61.03%
Power watts per sq.ft.: 31.28
Voltage forward per cob: 34.89
Lumens per watt: 197.14
Heatsink riser thickness / number of fins / fin's length: 0.3in/6/0.95in
Heatsink area per inch: 100.94 cm^2
Total heat watts: 305
umol/s/W / CRI: 4.53 / 70CRI
Heatsink length passive cooling @120cm^2/heatwatt: 363 inches
Heatsink length active cooling @40cm^2/heatwatt: 121 inches
COB cost dollar per PAR watt: $1.87
Electric cost @12/12 in 30 days: $39.43
Electric cost @18/6 in 30 days: $58.9
Cost per cob: $50.17
Heatsink cost per inch cut: $0.66
Total cobs cost: $803
Total heatsink passive cooling cost: $240
Total heatsink active cooling cost: $79


I understand where youre coming from but its the whole industry thats wrong about how to properly approach the measurements. Heres a good link on it.

https://www.ledgrowlightsdepot.com/pages/par-ppf-ppfd-and-dli-uncovered
https://growershouse.com/wordpress/wp-content/uploads/2014/12/blog_digilumeDE_PAR.jpg

 

[churchhaze]

Of course you have the right.


Ah, there's that bitterness and name calling unprovoked.

I knew it would come out sooner or later.

Why don't you give the beggar some money to buy some epileds so he can push them to you.

 

[Vnsmkr]

Whats the purpose to come on a thread written by someone else and just say as much negative shit as possible? If you don't agree thats fine, why waste time with it then? Only inadequate people need to do that sort of shit.

 

[churchhaze]

Whats the purpose to come on a thread written by someone else and just say as much negative shit as possible? If you don't agree thats fine, why waste time with it then? Only inadequate people need to do that sort of shit.

And you are a hypocrite for not following your own standards.

 

[MeGaKiLlErMaN]

Do you plan on starting a lighting company too? Why would I need to check sources? PPFD is PPF/A. When you're buying a lamp, you're buying PPF. When you buy a tent, you're buying A.

(BTW thats not me in the video thats me making fun of that guy as a continuation of this thread. )
https://www.rollitup.org/t/so-is-this-guy-for-real.919572/#post-12918689

 

[Vnsmkr]

Im a hypocrite, ok. Denial is very evident

 

[ttystikk]

This is vastly inaccurate. I suggest checking your sources. on PPFD.. not PAR

PAR is funny.
PPfD is the money.

 

[ttystikk]

Then do you see that math being worked out here? You only use PPFD when you compare equal size areas. I thought that was a given.


CXB3590DB36V4000K 16 COBS @1.4A ON 1.813 PROFILE HEATSINK
25 SQ.FT. CANOPY 94% EFFICIENT DRIVER @13 CENTS PER KWH
Total power watts at the wall: 831.91
Cobs power watts: 782
Total voltage forward: 558
Total lumens: 154163
Total PAR watts assuming 10% loss: 430
Total PPF: 1947.9
PPFD based on canopy area: 838.68
PAR watts per sq.ft.: 17.2
Cob efficiency: 61.03%
Power watts per sq.ft.: 31.28
Voltage forward per cob: 34.89
Lumens per watt: 197.14
Heatsink riser thickness / number of fins / fin's length: 0.3in/6/0.95in
Heatsink area per inch: 100.94 cm^2
Total heat watts: 305
umol/s/W / CRI: 4.53 / 70CRI
Heatsink length passive cooling @120cm^2/heatwatt: 363 inches
Heatsink length active cooling @40cm^2/heatwatt: 121 inches
COB cost dollar per PAR watt: $1.87
Electric cost @12/12 in 30 days: $39.43
Electric cost @18/6 in 30 days: $58.9
Cost per cob: $50.17
Heatsink cost per inch cut: $0.66
Total cobs cost: $803
Total heatsink passive cooling cost: $240
Total heatsink active cooling cost: $79


I understand where youre coming from but its the whole industry thats wrong about how to properly approach the measurements. Heres a good link on it.

https://www.ledgrowlightsdepot.com/pages/par-ppf-ppfd-and-dli-uncovered
https://growershouse.com/wordpress/wp-content/uploads/2014/12/blog_digilumeDE_PAR.jpg

...and we have a winner!

'Nice rack'

 

[ttystikk]

In nature when folks grow outside....yes mile high Denver imho qualifies...as does the S.American Andes or any range that can go a mile above sea lvl or higher. I think a neighbor who is/was a lifelong tibetan claims the altitude allows more of the suns rays ( I took this as more uv exposure at altitude) as opposed to lower lvl gardens. There must be more technology down the line in uv bulb production of like to think. lots to be explored imho.

More UVB, shorter growing season = Indica.

I'm enjoying much greater quantity and quality of terpenes under my COB LED with no UV at all than under any HID I've used. I figured establishing a baseline was prudent in any case, but the difference is already pretty dramatic if people can spot the difference in two clear jars from across the room.

 

[churchhaze]

PAR is funny.
PPfD is the money.

PPFD is PAR. (density at least)

 

[bobdagrowah]

Let's get back on track, sooooo Rm3 or anyone with an answer how much uvb should I give my girls per day and how many watts of uvb do I need to make a difference, I have 60 watts at the moment??

 

[VTMi'kmaq]

ikr.

 

[MeGaKiLlErMaN]

PPFD is PAR. (density at least)

Yes and no. It is but for a fiven sq area. PPFD is PPF/PAR Taken from around 9 points, added together and then divided by the number of points aka an average. It tells you where the light hits in the area you have.

 

[MeGaKiLlErMaN]

Let's get back on track, sooooo Rm3 or anyone with an answer how much uvb should I give my girls per day and how many watts of uvb do I need to make a difference, I have 60 watts at the moment??

That was answered on page 2 or 3 I believe it's around 54W for no more than 15 mins per hour furring flower only.

 

[VTMi'kmaq]

Yes and no. It is but for a fiven sq area. PPFD is PPF/PAR Taken from around 9 points, added together and then divided by the number of points aka an average. It tells you where the light hits in the area you have.

were talking about a huge nuclear reaction in space that sends spectrums of light that is essential for plants to flourish yes? well sans xrays....those would be bad

 

[MeGaKiLlErMaN]

were talking about a huge nuclear reaction in space that sends spectrums of light that is essential for plants to flourish yes? well sans xrays....those would be bad

Good thing we have the ozone layer huh?