Sulphur plasma growing and flowering... - GreenPassion.org - Dedicated to Medicinal Cannabis Cultivation and Education

snickelfritz · #1 (**permalink**) 10-06-2009, 06:19 PM

https://www.opengrow.com/index.php?showtopic=40312

Has anyone here used a light set up like this?

If so, can you post your thoughts / reviews on it?

6951A · #2 (**permalink**) 10-06-2009, 08:28 PM

my understanding is they are currently about $3,000 for the equivalent lumen output as a 1K HPS, however they seem to put out most of their light in the "green" spectrum which is not very useful for growing. Long story short, too much money for the wrong spectrum.

ileso · #3 (**permalink**) 10-07-2009, 05:23 AM

interesting...

ive been reading the thread there and theres interesting information and warnings about the system. aparently it emits very low heat.

Quote:

The heat is very low with this lamp ,when the surounding temp is arond the 20 C degrees it will be around the 23-24 C degrees when the lamp is switched on. The magnetron is producing some heat but because its 50 cm above my plants it will not reach my the canopy.
So far so good

but one of the most interesting is this which is totally unrelated..

Quote:

One more thing, have you heard about Humboldt Nutrients? The guys who where the brains behind Advanced Nutrients started their own company and set the new gold standard.

They developed the 'Amino Acid Chelated Nutrients' secret and no one touches them. 'Connoisseur' was their baby, but the owners of Advanced wouldn't invest in the best ingredients so my friends went and started their own company which sells for less than the standard Advanced. So it's like getting better than Connoisseur quality while paying less than standard 'Advanced' prices. They even teach people how to culture/ferment their own micro-organisms/ bacteria/biological inoculates. They let me in on the secret that Carboload is just plain old dried Molasses! Imagine how much money people would save if they knew just those two secrets?

here is another great titbit..

Quote:

Sulfur Lamp With CaBr2 Additive for Enhanced Plant Growth
John F. Kennedy Space Center, Florida

Calcium bromide can be added to the sulfur filling in a sulfur lamp to increase the emission of red light for enhanced growth of plants. Red light is more efficacious for plant growth than is visible light at shorter wavelengths. The addition of CaBr2 increases the emission at wavelengths in the vicinity of 625 nm, where the quantum efficiency for photosynthesis is close to 1.

A sulfur lamp is an electrodeless lamp that includes an evacuated quartz bulb partly backfilled with argon and with a little sulfur, plus a source of microwave power for exciting a plasma within the bulb. A sulfur lamp is very efficient for visible lighting. An attempt to increase the emission of red light by increasing the sulfur content would result in an excessive reduction in the emission of blue light. Alternatively, following a common practice in the lighting industry, one could attempt to increase the red emission by adding such metal halides as sodium iodide: in the presence of the lamp plasma, the metal atoms in most such additives become excited and ionized and they radiate in the desired spectral region, but they also emit unwanted infrared line radiation, with a consequent reduction in efficacy for growth of plants.

The Measured Spectrum of a Sulfur/Calcium Bromide Lamp is plotted along with the spectrum of a similar sulfur lamp without calcium bromide. The prominent spectral peak of the S/CaBr2 lamp lies at the wavelength region of highest quantum efficiency for photosynthesis in plants.Unlike other metal halide additives, in the presence of the lamp plasma, calcium bromide emits primarily molecular radiation at wavelengths in the vicinity of 625 nm, with minimal infrared emission. Thus, calcium bromide can be used to increase the emission of the desired red light. A representative experimental lamp based on this concept is made of a thin-wall, 35-mm-diameter quartz bulb containing tens of milligrams of sulfur, a few milligrams of CaBr2, and argon at a pressure of about 50 torr (6.7 kPa). As shown in the figure, the CaBr2 filling increases the desired red emission at the cost of only a small decrease in shorter-wavelength emission and with little or no increase in infrared emission.

these guys seam to know their busines. real science going on in those heads and in those tents... awesome developements, but the prices seam astronomical at the moment 1000 dollars for a set up is out of alot of peoples pockets. especially small time home growers like us... well like most of us. but maybe for bigger setups etc theres something here...

alot of weight shoving goes on around there.. hehehe,

anyway the pace of the growth is amazing to say the least, and the bushiness of the plants.. hmmm nice.

they argue alot over uv light etc. fact is cannabis originated in high altitude area of the planet with alot of uv light. for which it produces a resin to protect itself. anyway... its a great read, a great topic.. and im loving the pics.

well the results look amazing.

thanks for posting this snick im awed