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 So the question is which one is better ? Why ?

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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