booyah1985

All I can say about this thread is wow.. Guess its time to add some supplemental lighting to my hps bulbs. I will definatly stay tuned into this one.. now im goin to read it about 3 more times thanks penguin, silentbob, beener, lilbud, kat.. all very usefull information!

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Grow box specs
3'X4'X8' two story box, flower up top, veg down low.
2 - 250watt hps up top
4 - 40watt 4' fluorescent tubes on the bottom

currently growin skunk#1 and cinderella 99.

spark it if ya got it

Europa

...but now that I'm thinking of starting up the cab again I'm wondering if I should tweek my spectral distribution and intensity. I lost my data set to a hard drive crash last year so I was wondering, has anyone digitized any of these spectra? I really hated doing it the first time and now there's just too damn many for me to deal with them all.

I agree (because it seems logical to the chemist in me and I think Tazawa implied it too) and so what I did to calculate my first "best" blend of lamps is described here.

Has anyone come up with a better way to blend lamps?

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SSH F1 Full Auto
SSH Grow v2.0 "Full Auto"
Super Silver Haze Grow!
Sputnick and Europa design an environmental chamber
I hope they get along together

Beener

Hey, I thought I'd run this thread back up the poll. It's the most informative lighting spectral distribution thread you'll find on any boards, and would be excellent reading for those that are shopping for new bulbs, and especially anyone that is interested in customizing their lighting set-up.

Since this thread was started I have made large some changes to the lighting in my veg. room. Unfortunately, I'm starting with all new genetics so I don't really have a comparison other than a general overall opinion based on other plants I've grown in the past.

Though there is some obvious potential for faulty reads with these circumstances, I have to say that I am currently vegging some of the tighest compact plants I've ever had. The secondary growth is full and tight with 9 nodes packed into about 14" of plant.

I've been using a combination of bulbs starting with six 40W, 48" Super Actinic tube fluoros, and two 2700K 250W CFLs. Then recently adding the 400W MH.

I'll stop there because I'm a bit off topic but, If anyone else is doing any playing around based on this thread, we should start another thread, and link the two together. The data would be priceless.

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Beener

penguin

Beener, are you using that lighting setup throughout flowering? Any idea what kind of spectra the CFLs & MH are pushing?

Now, to find the Super Actinic spectrum in T5 HO format.


Sorry to hear about your HDD failure. Europa. How did you (a) obtain spectra and (b) digitize them? I have have not found any light saturation data for any variety of cannabis.

Photosynthesis Lab. The Qubit package is only $1585. You'd think someone would've done this by now.



penguin

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JWCyborg

I just read this entire thread from front to back, including all the charts...Man, have I got a headache!

Gonna have to set the printer on stun and make a nice lighting file...


Good job guys!

JW

vernonsupreme

pretty interesting read...perhaps a spreadsheet listing the best lights in flouro, .4k, .6k, and 1k for each growing stage could be worked up by someone with more computer and organizational skills than me

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Low Spark: An Experiment in NFT



How to build a cool tube by VS

Moshe

Following Beener's advice, here is some info on the Philips Son-T-Green Power.

Available in 400w (58500lm) and 600w (88000lm)


Spectral Power Distribution @ 400w:


Spectral Power Distribution @ 600w:


----------------
Product Description (from philips)
High Pressure Sodium lamp with clear outer bulb, high lumen maintenance and optimised micromol output

Product Features
Clear tubular outer bulb
Ceramic discharge tube with Philips Integrated Antenna (PIA) for a long and reliable lifetime
ZrCo getter ensures high lumen maintenance and few early failures
"Green Power" concept with optimised micromol output (growth light)
"Plus" concept with high efficacy translated into high light output

Product Benefits
Optimised performance for horticultural applications
High lumen maintenance safeguards a constant crop quality and quantity over life

Application
Horticultural applications, plant irradiation
----------------

I see several retailers carrying it and describe it as the best one-light grow available. If anyone has on-hands experience with it, I'd love to hear about it, I'm thinking about taking this route.

Price wise, it's about 10-20% more expensive than the Son-T-Agro at my local retailer.

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penguin

Hi Moshe

If you compare the "Green Power" spectrum to the Son Agro spectrum (post 9, 430w) you will see that they are very similar. Depending on how accurate the graphs are, the Son-T would appear to have a slight advantage from having higher relative output above 600. The Green Power could possibly have higher total radiant output than the Son Agro, but without verifying that I personally would not pay more for the Green Power lamp.


penguin

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Europa

I think it's was an e-mail worm. I'm still trying to recover files from it, it has all my pics from grows 1, 2 and most of grow 3. I took the lamp emission energy (power) spectra from the manufacturer's/distributors sites, printed, and measured them with a ruler and input the results to excel. I didn't use saturation data, I used an action spectrum but I never did find one for MJ. I think it was Tazawa's.


Thsi is the caption from the attached graph.
Fig.4. Average values for photosynthesis action spectra (McCree, 1972)

[1] Average of 20 species grown in plant growth chambers.
[2] Average of 8 species grown in the field.

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__________________
SSH F1 Full Auto
SSH Grow v2.0 "Full Auto"
Super Silver Haze Grow!
Sputnick and Europa design an environmental chamber
I hope they get along together

Moshe

There's some specs for the Sylvania GroLux at the beginning of the thread, but the image was somewhat blurred and it wasn't referencing which bulb was used. So... Since I just bought this bulb, here are the specs:



It looks similar to the Son-T-Agro and Son-T-GreenPower. It gives better lumens compared to the Son-T-Agro at less wattage (400 vs 430).

Here is the manufacturer's mambo-jumbo:
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The special sodium lamp technology of the Super Gro 400, unique to Sylvania, provides more light and an improved quality of light. The SHP GroLux 400 lamps give on average as much as 65% more red light compared to existing special horticultural lamps, and as plants are very sensitive to red light this means a strong and consistant performance for your harvest.

Luman Output (Lm) : 58,000
Lamp Life (Av Hours) : 24,000
Photoactive Radiation - (PAR umol/s) : 713
Photosynthesis Flux (Phyto-Lm) : 128,000
Colour Rendering (CRI-Ra) : 20
Colour Temperature (Kelvin) : 2050
Base : E40/GES
Wattage (W) : 400
Burning Position : Universal
Lamp Voltage (V) : 120
Lamp Current (Amp) : 4.0
Lamp Length (mm) : 292
Lamp Diameter (mm) : 48
---------------

Got to love marketing-speech, 65% of a non-existing compared-to product always sounds good. Seriously though, it sounds like a slightly cheaper (electricity wise) alternative to the Son-T-Agro. Seems identical to the Son-T-GreenPower, but was cheaper to buy.

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