Let there be light - What's the best grow lights, growing ?

[acespicoli]

Ceramic Metal Halide (CMH)

Some basic info: Ceramic Metal Halide lamps are currently not available in sizes over 400 watts. Philips is working on it, however there is no ETA. The CMH lamps 150w and lower should work with digital ballasts. 250w and 400w CMH lamps will NOT work with ANY digital ballast EXCEPT the ones...

www.icmag.com

Battle of the bulbs... Which HPS 600 vs 1000

Had some pre conceived notions about this one, id like to see what everyone else thinks The question is which one is better ? Why ?

www.icmag.com

Side by side grow. 630 CMH vs 1000HPS

Hey all.. I wanted to share this side by side grow to more of the audience in this forum. My thread in the grow diaries " 8k coco grow show" is rather huge, and I think this will tend to get lost and not seen by many on here. I figured this section would be a good one to post this in...

www.icmag.com

PG4,5 spoiler alert #147

 

[mountainoutlaw]

Chilledlogic grow craft.

 

[Dime]

I took a flourescent fixture,mounted a 1k halide and 1k hps to it, then I used an old wheel hub off of my truck , bolted it to steel plate for stability,then bolted a sheet of plywood to it and made a turntable and i give them a 1/4 turn or so every day for equal exposure and ease of watering. It keeps them from running and it gives good penetration .

 

[acespicoli]

Conversion - Instantaneous PPFD to Integrated PPFD​

Most light meters measure the instantaneous photosynthetic photon flux density in µmol m-2 s-1 and yet plant growth is determined by the integrated daily photosynthetic photon flux density in mol m-2 d-1.
Here is how to convert from µmol m-2 s-1 to mol m-2 d-1 when using electric lights.
There are 3600 seconds in an hour. If the electric light output is constant, the instantaneous PPFD can be added up (integrated) over an hour.
Therefore 1 µmol m-2 s-1 = 3600 µmol m-2 h-1.
This must be divided by a million (1,000,000) to convert from micromoles to moles: 3600 µmol m-2 h-1 = 0.0036 mol m-2 h-1.
If the electric lights are on continuously (24 hours), the hourly PPFD must be multiplied by 24 to get the daily PPFD: 0.0036 mol m-2 h-1 = 0.0864 mol m-2 d-1.
There are 86,400 seconds in a day (3600 x 24 hours) so the daily PPFD can be calculated directly from the instantaneous PPFD from the following equation: µmol m-2 s-1 multiplied by 86,400 and divided by 1,000,000 = mol m-2 d-1.
So: 1 µmol m-2 s-1 = 0.0864 mol m-2 d-1 with continuous light
These conversions are accurate only under electric lights. The integrated daily PPFD from sunlight changes during the day so a single measurement cannot be used to estimate daily PPFD.

Daily PPFD Reference Table​

24-Hour Photoperiod

Instantaneous PPFD (µmol m-2 s-1)	Daily PPFD (mol m-2 d-1)
10	0.864
100	8.64
200	17.28
300	25.92
*600	*51.84
1000	86.40
2000	172.80

16-Hour Photoperiod

Instantaneous PPFD (µmol m-2 s-1)	Daily PPFD (mol m-2 d-1)
10	0.567
100	5.67
200	11.52
300	17.28
600	34.58
*1000	*57.60
2000	115.20

12-Hour Photoperiod

Instantaneous PPFD (µmol m-2 s-1)	Daily PPFD (mol m-2 d-1)
10	0.432
100	4.32
200	8.64
300	12.96
600	25.92
1000	43.20
*1300	*56.23
2000	86.40

*There are 50 to 60 moles per m2 day on sunny summer days in outside areas without any shade

 

[acespicoli]

Overview​

AgroMax Clone Pro 9000k 18W LED Strip​

Clone lighting at its most efficient. The AgroMax Pro Clone 9000K LED grow light specializes in nursery applications including cloning, seedlings, and more. Coming in a pack of two, each strip is housed in a finned aluminum heatsink, running brighter with significantly less heat output. The Clone Pro produces a similar light output as your standard T5 light at 45.36 μmols. But what really sets the Clone Pro apart is its low-energy consumption at only 18 watts per light. The 9000K spectrum is optimized to meet the demands of vegging plants and take your clones to the next level. A blend of white, red, and blue Samsung LED chips promotes rapid and vigorous development in the early stages of growth.

The slim lightweight design makes these LED bars easy to mount onto plant racks, shelves, propagators, and cloning machines. Package comes with mounting hardware to help assist in mounting the Clone Pros into any current grow setup, large or small. LED strips are daisy-chainable, IP-65 rated, and backed by a 3-year warranty.

Features:​

• Full Spectrum 9000K lighting
• IP65 Waterproof rating
• Input Power: 18 Watts
• 120-240V input voltage (auto-sensing)
• 45.36 μmol = 2.35 μmol/w
• Coverage Area: 2′ x 4′
• Mounting Height: 9″ above canopy
• Strip Dimension: 41.5″ L x 1″ W x 1″ H
• Package Dimension: 47″ L x 6″ W x 2.5″ H
• 3-Year Warranty
• ETL-Listed

Box Comes With: Two (2) 18W LED strips, 6.5″ power cord, 1.5″ daisy chain connector, four (4) mounting brackets, and accessories.
View AgroMax Clone Pro LED 9000K Instructions Guide

https://growlightmeter.com/

 

[mountainoutlaw]

Awesome gadget there, will look into

 

[acespicoli]

Strip Light LED Ready Fixtures | 1000Bulbs.com

Convert from fluorescent to LED with a strip light LED ready fixture! Save on maintenance and energy costs by shopping at 1000Bulbs.com.

www.1000bulbs.com

https://www.htgsupply.com/products/growbright-4-2-lamp-high-output-t5/

https://www.htgsupply.com/product-category/grow-lights/grow-light-bulbs/t5-bulbs/

T5 GROW LAMPS – AgroMax

T5 GROW LAMPS​

AgroMax T5 Horticultural Lamps are the premier brand of High Output T5 Fluorescent lamps on the market today! With almost 10 years in the marketplace, the AgroMax T5 Lamps have earned a reputation for reliability, performance and value that is unmatched by any other brand today. Made specifically for growing plants, the AgroMax T5 Lamps are tailored for your plants exact needs. There are many different spectrums to choose from to maximize growth during different stages of plant growth.

AgroMax 6400K LED TEK Bulb​

AgroMax 6400K LED TEK Bulb AgroMax has taken one of our favorite T5 grow lights, the TEK series, and made it even better with the newest in LED technology! If you’ve been shopping with HTG for a while, there’s a good chance you’ve got one of our HTG Supply TEK fixtures somewhere. The all-new TEK …

AgroMax 6400K T5 LED Grow Light Bulb​

AgroMax 4′ T5 LED Bulb – 6400K Upgrade your T5 grow lights with higher-efficiency, longer-lasting AgroMax T5 LED bulbs to boost growing power and save money! AgroMax 4′ T5 LED bulbs are a direct-fit, plug-and-play replacement for any 4’ T5 lamp (F54T5HO) and are quick, easy and safe to use. Simply install into the sockets …

AgroMax PLL 55 watt Compact T5 BIAX​

3000K BLOOM – Pure Par – 6400K GROW – 10000K FINISHER

AgroMax T5 Bloom LED Light Bulb​

AgroMax Bloom LED Light Bulb Upgrade your T5 grow lights with higher-efficiency, longer-lasting AgroMax T5 LED bulbs to boost growing power and save money! With full-spectrum white chips and supplemental reds, this lamp is designed to boost the blooming potential of your flowers and plants. AgroMax 4′ T5 LED bulbs are a direct-fit, plug-and-play replacement …

T5 LAMP SERIES​

3000K BLOOM – 5400K SUPER VEG – 6500K GROW – 10000K FINISHER – 10000K UV-A PLUS

The AgroMax 4' T5 LED bulbs are direct plug-and-play replacement T5 LED grow lights for standard 54-watt T5 bulbs. With a brighter 5200 lumen output and a power draw of only 41 watts, the AgroMax T5 LED bulb is more efficient than standard fluorescent T5 bulbs. Use this T5 LED grow light to easily equip standard 4' T5 grow lights with LED technology for reduced power consumption, improved spectrum, and longer lamp life. - Convert your existing T5 fixture into a new LED grow light with a simple bulb swap. - 41 watt power draw with a 5,200 lumen output. - Works well for seed starting, cloning, and vegetative plants

T5 PURE SERIES​

PURE BLOOM – PURE PAR – PURE UV

 

[Zeta Reticuli]

For indoor definitly DE HPS,but overall Sun cant be beaten by any indoor light,
we have some islands here that have 300+ days of Sun from 365 days in a year,

its not legal here to grow yet but when its gona be this islands will give best Cannabis in a World.

 

[CocoNut 420]

Hey bud, I use a mixture of lights, depending on the season I use different arrangements, tbh if I had a warmer climate I'd only use Led, I'm @57 degrees lat so I need HID and fluorescent for the heat they give off.

I start my seeds with 4x T5s grow them on under the the t5s then flip to flower.

sometimes it's led only other times I use Mh and Mh with 240w boards each side of it.

650/680w led

My favourite light isn't the best imo lol, there's something about hid plants love, led requires a bit gentle coaxing to really get them going...I suspect that's temp related?

The crops I'm getting from led are better than my hps crops which imo weren't too shody.

600/660w hps ^^^

Cheers bud

 

[Rocket Soul]

Hey bud, I use a mixture of lights, depending on the season I use different arrangements, tbh if I had a warmer climate I'd only use Led, I'm @57 degrees lat so I need HID and fluorescent for the heat they give off.
View attachment 19010230
I start my seeds with 4x T5s grow them on under the the t5s then flip to flower.
View attachment 19010231
sometimes it's led only other times I use Mh and Mh with 240w boards each side of it.
View attachment 19010237
650/680w led

My favourite light isn't the best imo lol, there's something about hid plants love, led requires a bit gentle coaxing to really get them going...I suspect that's temp related?

The crops I'm getting from led are better than my hps crops which imo weren't too shody.
View attachment 19010247
600/660w hps ^^^

Cheers bud

Have you tried Led + just a touch of incandescent? Worth looking into... Check out Greyfaders latest grow...

Incandescent have a much better coverage of reds + 660nm (better than hps and monst of hid) which are almost impossible to find in leds, but seems to have a fair bit of importance in horticulture context.

Hoping to try this myself next winter.

 

[CocoNut 420]

Have you tried Led + just a touch of incandescent? Worth looking into... Check out Greyfaders latest grow...

Incandescent have a much better coverage of reds + 660nm (better than hps and monst of hid) which are almost impossible to find in leds, but seems to have a fair bit of importance in horticulture context.

Hoping to try this myself next winter.

Hey bud, no I've not tried or even seen incandescent in a grow I'll check out Greyfaders grow, thank you.

Side note...years n years back I tried growing bag seeds with a 100w incandescent bulb the seedlings grew to circa a 1ft in two days

I'm a little surprised to hear incandescent has something to add to led.

 

[Rocket Soul]

Hey bud, no I've not tried or even seen incandescent in a grow I'll check out Greyfaders grow, thank you.

Side note...years n years back I tried growing bag seeds with a 100w incandescent bulb the seedlings grew to circa a 1ft in two days

I'm a little surprised to hear incandescent has something to add to led.

I did the same with the same results! Bolted like mfer. I would never rec it as a stand alone, but as a complement!

I mentioned it here as the original comment was growing with hid due to cold climate. I do believe youve already seen pics of this in the led bud quality thread.

The way i think of incandescent is like a wide far red channel, and only very little %. It also helps throw a bit of heat on the cannopy to help with transpiration. But i have still to try it myself, maybe this winter.

Greyfader/Delta9 is a very talented grower using a self built/invented hydro system which seems very legit, im still hoping to convince my growbuddy to try it. The only thing holding him back is that hes afraid of high water consumption; were under water restrictions where i am and we rely on rain water.

Edit: it helps if you look up the spectrum online and try to make a mental overlay of it at a 1:10 ratio with leds, its just a bit of extra reds, far reds and infra red, exactly where the led redbump starts to dropp off.

 

[CocoNut 420]

I did the same with the same results! Bolted like mfer. I would never rec it as a stand alone, but as a complement!

I mentioned it here as the original comment was growing with hid due to cold climate. I do believe youve already seen pics of this in the led bud quality thread.

The way i think of incandescent is like a wide far red channel, and only very little %. It also helps throw a bit of heat on the cannopy to help with transpiration. But i have still to try it myself, maybe this winter.

Greyfader/Delta9 is a very talented grower using a self built/invented hydro system which seems very legit, im still hoping to convince my growbuddy to try it. The only thing holding him back is that hes afraid of high water consumption; were under water restrictions where i am and we rely on rain water.

Edit: it helps if you look up the spectrum online and try to make a mental overlay of it at a 1:10 ratio with leds, its just a bit of extra reds, far reds and infra red, exactly where the led redbump starts to dropp off.

Thank you bud i appreciate the info, 1:10 as in 70w for my 720w bar light?

I've been enjoying my growing recently more than ever before, I'd be up for trying incandescent at some point if it's only 70w required, I only grow for me so it's difficult to justify costs although I enjoy messing with experimenting.

 

[Rocket Soul]

Thank you bud i appreciate the info, 1:10 as in 70w for my 720w bar light?

I've been enjoying my growing recently more than ever before, I'd be up for trying incandescent at some point if it's only 70w required, I only grow for me so it's difficult to justify costs although I enjoy messing with experimenting.

Havent tried myself but i believe that was the ratio he used, but his leds were less efficient. Maybe just a few bulbs with a dimmer, and look out for that bolting. Or even ask Greyfader, hes a good guy

 

[acespicoli]

Not to open a can of worms, but it would be interesting to find out if the implementation of UVB to the flowering cycle would curtail the incidence of fungal or mycotoxins on the plants?

View attachment 19034574

Irradiation - Wikipedia

en.wikipedia.org

Agriculture​

Main articles: Atomic gardening and Food irradiation
Further information: Mutation breeding
After its discovery by Lewis Stadler at the University of Missouri, irradiation of seed and plant germplasm has resulted in creating many widely-grown cultivars of food crops worldwide.[14] The process, which consists of striking plant seeds or germplasm with radiation in the form of X-rays, UV waves, heavy-ion beams, or gamma rays, essentially induce lesions of the DNA, leading to mutations in the genome. The UN has been an active participant through the International Atomic Energy Agency. Irradiation is also employed to prevent the sprouting of certain cereals, onions, potatoes and garlic.[15] Appropriate irradiation doses are also used to produce insects for use in the sterile insect technique of pest control.[16]

The U.S. Department of Agriculture's (USDA) Food Safety and Inspection Service (FSIS) recognizes irradiation as an important technology to protect consumers. Fresh meat and poultry including whole or cut up birds, skinless poultry, pork chops, roasts, stew meat, liver, hamburgers, ground meat, and ground poultry are approved for irradiation.[17]
View attachment 19034577

https://agsafebc.ca/wp-content/uploads/2021/06/2021-06_Safety-Meeting_UV-Lighting-Hazard-Alert_Cannabis.pdf

Ultraviolet germicidal irradiation - Wikipedia

en.wikipedia.org

Thanks for sharing that

 

[acespicoli]

THIS IS A WORK IN PROGRESS


Lighting Comparison List - Light Source, PPFD

LED lights are sensitive to prolonged exposure to extreme heat, and without a way for the hot air to escape, the heat will begin to damage the LED itself, causing it to prematurely fail.

fpls-13-974018.pdf

drive.google.com

Front. Plant Sci., 26 September 2022
Sec. Crop and Product Physiology
Volume 13 - 2022 | https://doi.org/10.3389/fpls.2022.974018

Indoor grown cannabis yield increased proportionally with light intensity,​

 

[acespicoli]

​

Most Common LEDs Lamps etc​

High-intensity discharge lamp – Type of electric lamp/bulbHigh-intensity discharge lamp

• Ceramic metal-halide lamp
• Mercury-vapor lamp – Light source using an electric arc through mercury vapor
• Metal-halide lamp – Type of lamp
• Sodium-vapor lamp – Type of electric gas-discharge lamp

Light-emitting diode – Semiconductor and solid-state light source
Light-emitting electrochemical cell – solid-state device that generates light from an electric current

Virtually Obsolete​

Fluorescent lamp – Lamp using fluorescence to produce light (sadly)
Plasma lamp – Type of electrodeless gas-discharge lamp






Complete List

Electric discharge (electrical energy)​

• Main article: Electric arc
  • Arc lamp – Lamp that produces light by an electric arc
  • Flashtube – Incoherent light source
• Main article: Electrostatic discharge
  • Lightning – Weather phenomenon involving electrostatic discharge
  • Electric spark – Abrupt electrical discharge through an ionised channel
• Main article: Gas-discharge lamp
  • Electrodeless lamp – Gas-discharge lamp using electric and magnetic fields to transfer energy to the gas inside
  • Excimer lamp – Ultraviolet source based on spontaneous emission of excimer molecules.
  • Fluorescent lamp – Lamp using fluorescence to produce light
    • Compact fluorescent lamp – Fluorescent lamps with folded tubes, often with built-in ballast
    • Tanning lamp – Device which produces ultraviolet light used for indoor tanning
    • Blacklight – Light fixture that emits long-wave ultraviolet light and very little visible light
    • Geissler tube – Early gas-discharge lamp
    • Moore tube – American electrical engineer and inventor (Obsolete)
    • Ruhmkorff lamp – Artificial light sources powered by ionized gas electric discharge (Obsolete)
  • High-intensity discharge lamp – Type of electric lamp/bulbHigh-intensity discharge lamp
    • Carbon arc lamp – Lamp that produces light by an electric arc
    • Ceramic metal-halide lamp
    • Hydrargyrum medium-arc iodide lamp – used for stage lighting
    • Mercury-vapor lamp – Light source using an electric arc through mercury vapor
    • Metal-halide lamp – Type of lamp
    • Sodium-vapor lamp – Type of electric gas-discharge lamp
    • Sulfur lamp – Lighting system
    • Xenon arc lamp – Gas discharge lamp that produces intense white light
  • Hollow-cathode lamp – spectral line source used in physics and chemistry
  • Induction lighting – Gas-discharge lamp using electric and magnetic fields to transfer energy to the gas inside
    • Sulfur lamp – Lighting systemSulfur lamps
  • Neon and argon lamps – Light source based on gas discharge
    • Dekatron – Early and obsolete type of computer memoryDekatron
    • Nixie tube – Electronic numeric display device
  • Plasma lamp – Type of electrodeless gas-discharge lamp
  • Xenon flash lamp – Incoherent light source

​

Electroluminescence​

Main article: Electroluminescence
Electroluminescence is light resulting from an electric current being passed through a substance.

Light-emitting diodes

• Light-emitting diode – Semiconductor and solid-state light source
• Organic light-emitting diode – Diode that emits light from an organic compound
• Polymer light-emitting diode – Diode that emits light from an organic compound
• AMOLED, Active matrix OLED - typical OLED addressing scheme for color OLED displays. (Display content) Has to be periodically refreshed to maintain picture, as opposed to for example Electronic paper – Display technology for use in mobile devices and televisions
• Light-emitting electrochemical cell – solid-state device that generates light from an electric current
• Electroluminescent wire – Capacitive light source in the form of a wire
• Field-induced polymer electroluminescent
• Laser – Device which emits light via optical amplificationLasers
  • Chemical laser – Laser that obtains energy from chemical reactions
  • Dye laser – Equipment using an organic dye to emit coherent light
  • Free-electron laser – Laser using electron beam in vacuum as gain medium
  • Gas dynamic laser – Laser based on differences in relaxation velocities of molecular vibrational states
  • Gas laser – Laser in which electricity is discharged through gas
  • Ion laser – Type of gas laser
  • Laser diode – Semiconductor laser
    • Laser excited phosphor – Devices and processes that produce light Long distance beam light
  • Metal-vapor laser
  • Nonlinear optics – Branch of physics
  • Quantum well laser – Laser diode in which the active region is so narrow that quantum confinement occurs
  • Quantum dot laser – Semiconductor laser that uses quantum dots as the active laser medium
  • Ruby laser – Solid-state laser
  • Solid-state laser – Laser which uses a solid gain medium

 

[acespicoli]

There is a nagging feeling I have telling me to try these ​

​

Ceramic metal-halide lamp​

Streetlamp with a ceramic metal halide bulb

Ceramic metal halide bulb with G12 socket

A ceramic metal-halide lamp (CMH), also generically known as a ceramic discharge metal-halide (CDM) lamp,[1] is a type of metal-halide lamp that is 10–20% more efficient than the traditional quartz metal halide[2] and produces a superior color rendition (80-96 CRI).[3]
Applications for these lamps include shop lighting, street lighting, architectural lighting and agricultural lighting including grow lights. A CMH light was first exhibited by the Thorn Lighting Group in 1981 at the Hannover World Light Fair, and the first commercial ceramic metal halide lamps were distributed by Philips in 1994.
The term "Light Emitting Ceramic" (LEC) is sometimes generically used to describe ceramic metal-halide lamps in grow lights in general, though that term is actually the registered trademark of a specific brand of ceramic metal halide light.[4][5][6][7]

Impact of Three Different Light Spectra on the Yield, Morphology and Growth Trajectory of Three Different Cannabis sativa L. Strains - PMC

Cannabis is one of the oldest cultivated plants, but plant breeding and cultivation are restricted by country specific regulations. Plant growth, morphology and metabolism can be manipulated by changing light quality and intensity. Three ...

www.ncbi.nlm.nih.gov

 

[acespicoli]

Valoya AP673L LED Light for Professional Horticultural Purposes​

https://www.valoya.com/wp-content/uploads/2020/05/EN_Product-Brochure_2020.2.pdf

Spectra available AP67, AP673L, NS1, Solray™ Power consumption 395W Power input 100-240, 277 VAC (all spectra) 200 - 480 VAC (Solray™ spectrum only) Weight 11 kg (24.3 lb) Dimensions (L x W x H) 347 x 382 x 166 mm 13.7" x 15" x 6.5" Cable 0,3 m (11.8") mains input, 0,3 m (11.8") dimming cable Certifications / Approvals CE marked, RoHS compliance Tested and certified to UL/CSA standards Dimming 0-10V, PWM, light output: off, 6-100% Distance from the plants (rec.) 0,5 - 4,0 m (20" - 13.1') Light intensity decay Max 10% at 36 000 h. Typical usage 50 000 h. Light efficacy (380 - 820 nm) Up to 2,4 µmol/W (spectrum dependent) Ambient operating temperature -10 ˚C – +35 ˚C (14 ˚F – 95 ˚F) Water & impact protection IP55: Dust-protected & protected against water jets Warranty Up to 5 years limited warranty. More details at www.valoya.com/warranty Typical values presented. Tolerances apply. For more detailed technical specifications please download the 'Installation Guide' from valoya.com/brochures

Sol-Digital 1000w HPS Dual Spectrum Lamp – Huge 141,500 Lumens​

​

 

[Creeperpark]

View attachment 19034830

Valoya AP673L LED Light for Professional Horticultural Purposes​

https://www.valoya.com/wp-content/uploads/2020/05/EN_Product-Brochure_2020.2.pdf

View attachment 19034837
View attachment 19034838
Spectra available AP67, AP673L, NS1, Solray™ Power consumption 395W Power input 100-240, 277 VAC (all spectra) 200 - 480 VAC (Solray™ spectrum only) Weight 11 kg (24.3 lb) Dimensions (L x W x H) 347 x 382 x 166 mm 13.7" x 15" x 6.5" Cable 0,3 m (11.8") mains input, 0,3 m (11.8") dimming cable Certifications / Approvals CE marked, RoHS compliance Tested and certified to UL/CSA standards Dimming 0-10V, PWM, light output: off, 6-100% Distance from the plants (rec.) 0,5 - 4,0 m (20" - 13.1') Light intensity decay Max 10% at 36 000 h. Typical usage 50 000 h. Light efficacy (380 - 820 nm) Up to 2,4 µmol/W (spectrum dependent) Ambient operating temperature -10 ˚C – +35 ˚C (14 ˚F – 95 ˚F) Water & impact protection IP55: Dust-protected & protected against water jets Warranty Up to 5 years limited warranty. More details at www.valoya.com/warranty Typical values presented. Tolerances apply. For more detailed technical specifications please download the 'Installation Guide' from valoya.com/brochures

Sol-Digital 1000w HPS Dual Spectrum Lamp – Huge 141,500 Lumens​

​

Thomas Edison would flip out if he could read this list.