Slash’s Lighting data Thread.

[Slash]

I’ve decided to start this thread for those that are interested in lighting for growing plants. The different spectrums intensities etc and how that may affect plant growth patterns , yields etc.
The plan for the thread is to measure any grow light I can get my hands on in the foreseeable future and publish the data of the parameters that are important for plant growth. I will measure each light from a consistent distance from each light to keep data consistent (I’m thinking 50cm)
I will be using my Asense Essence Lighting Passport coupled with Allied Scientific Agricultural Lighting Spectrum Genius App. This piece of equipment cost me an arm and a leg when I bought it out of Canada a few years ago and actually had to sell my boat to be able to afford it It’s been a great piece of equipment though and valuable both for my work and as a tool to understand different lighting and how it influences plant growth which has been an obsessive interest of mine for about 10 years.
Cheers

 

[Slash]

To start the ball rolling here is data of the sun at midday in April in North Qld.
PPFD- 1534
Colour Temp - 5453 Kelvin
CRI - 99
The white line is a reference and indicates the light parameter that a cannabis plant can absorb.

 

[Goonie Goat]

I’ve decided to start this thread for those that are interested in lighting for growing plants. The different spectrums intensities etc and how that may affect plant growth patterns , yields etc.
The plan for the thread is to measure any grow light I can get my hands on in the foreseeable future and publish the data of the parameters that are important for plant growth. I will measure each light from a consistent distance from each light to keep data consistent (I’m thinking 50cm)
I will be using my Asense Essence Lighting Passport coupled with Allied Scientific Agricultural Lighting Spectrum Genius App. This piece of equipment cost me an arm and a leg when I bought it out of Canada a few years ago and actually had to sell my boat to be able to afford it It’s been a great piece of equipment though and valuable both for my work and as a tool to understand different lighting and how it influences plant growth which has been an obsessive interest of mine for about 10 years.
Cheers

That spectrometer is pretty expensive .

I'm in the process of building my own light for the 2×4 which is basically just genuine Samsung evo diodes with a few 660nm reds.

8× 56.1cm strips, driven at 0.956a on a meanwell 320w driver.
Would be nice to have that tool.

 

[Slash]

This is a 400 watt Power Plant HPS with PP digi ballast and PP bulb.
PPFD @ 50cm - 464
Color Temp - 1906 Kelvin
CRI - 32

 

[Slash]

That spectrometer is pretty expensive .

I'm in the process of building my own light for the 2×4 which is basically just genuine Samsung evo diodes with a few 660nm reds.

8× 56.1cm strips, driven at 0.956a on a meanwell 320w driver.
Would be nice to have that tool.

I’ve got a mate that has been building his own lights for many years. He does a great job and does really well with them. There’s not a huge saving to be made out of building your own lights once you factor in parts and time spent. There’s a lot of satisfaction to be had though if you can build a good one. Getting your spectrum in the right general zone is one of the most important factors IMO and the beauty of building your own lights once is you can dial it into whatever spectrum you believe will give you best results

 

[Goonie Goat]

I’ve got a mate that has been building his own lights for many years. He does a great job and does really well with them. There’s not a huge saving to be made out of building your own lights once you factor in parts and time spent. There’s a lot of satisfaction to be had though if you can build a good one. Getting your spectrum in the right general zone is one of the most important factors IMO and the beauty of building your own lights once is you can dial it into whatever spectrum you believe will give you best results

Yeah luckily had spare drivers from my previous diy light I could use, but still quite expensive .

With the added reds the spectrum is 3350k.

 

[Slash]

Pro Grow 200 watt UFO
PPFD @ 50cm - 398
Color Temp - 3758 Kelvin
CRI - 89

 

[Slash]

Yeah luckily had spare drivers from my previous diy light I could use, but still quite expensive .

With the added reds the spectrum is 3350k.

3350K is a pretty on point and you should be able to grow some very nice flowers in that zone

 

[VinDeezle]

Super cool thread idea. Always wanted a spectrometer. Will follow along for sure.

 

[SAW]

View attachment 63111To start the ball rolling here is data of the sun at midday in April in North Qld.
PPFD- 1534
Colour Temp - 5453 Kelvin
CRI - 99
The white line is a reference and indicates the light parameter that a cannabis plant can absorb.

Interesting thread.
I’ve seen some terms before but before you go too far can you explain this in a bit more detail?
The graph, the three points and what the white line means?
Please

 

[Billygoat]

What’s a decent spectrometer cost?

 

[Slash]

What’s a decent spectrometer cost?

Hi mate,
This set up cost me almost 6K. It was the best handheld set up available at the time(maybe still is)
I know a lot of you guys are going to think I’m fucking nuts spending that sort of $ on a tool like that

 

[Slash]

Horti Bloom Mega Evo 720w
PPFD @ 50cm - 778
Colour Temp - 3391 Kelvin
CRI - 87

 

[Slash]

SuperTechLED Supa Nova 250 watt
PPFD @ 50cm - 632
Color temp - 3727 Kelvin
CRI - 91

 

[benn0]

Any Phlizon tests?

 

[Slash]

Intro Grow 26w clone bar in grow spec
PPFD @ 50cm - 58
Color Temp - 5868 Kelvin
CRI - 84

 

[benn0]

This is a 400 watt Power Plant HPS with PP digi ballast and PP bulb.
PPFD @ 50cm - 464
Color Temp - 1906 Kelvin
CRI - 32

Just more proof I am missing out and need to upgrade!

 

[Slash]

Any Phlizon tests?

Most of these tests I’m doing on the fly so I’m only going to be able to tests lights I can get my hands on. I’m planning to test everything I possibly can so as soon as a Philzon comes my way or I have the opportunity to test someone’s that has one I’ll be putting it up.

 

[Slash]

Just more proof I am missing out and need to upgrade!

100% mate, HPS are recalling lacking a lot that a good LED can give you despite what some may say

 

[Slash]

Hi Par 315 watt Ceramic Metal halide
PPFD @ 50cm - 356
Color temp - 2772 Kelvin
CRI - 88