UVb an experiment

[MerryPrankstr]

Thanks for the info on the uv LEDs.

In that case I have a box of a dozen PAR 38 uvB lamps that screw into standard Edison sockets. When the time comes I hope to more properly ripen my curreny grow if it doesn't completely fill the area (LOL).

OT: Thanks again and :thumbsup:

Forever on the bus....
M.P.

[oldmac]

Qiuck update. Yesterday (Oct 7th) I harvested this last run, it was 8 weeks exact. Got to abt 15-20% amber rest cloudy abt where I like this strain.

UVb has it's most profound influence on the maturing of the trichomes. Just using it for the last 2 weeks made a BIG difference in how fast and even getting to an "amber alert" stage. Last run even at 9 weeks I had no amber. No doubt it would be very easy to quickly over do the ripeness when using UVb.

This next run I will use the UVb during the entire flower period, just like I did before the experiments, to get back to my standard. I also need to get a weight from the last go round to see if only 2 weeks restores the wgt lost wo/UVb.

[Dogznova]

You found the speed... Awsome!!!

[Dogznova]

UVb has it's most profound influence on the maturing of the trichomes. Just using it for the last 2 weeks made a BIG difference in how fast and even getting to an "amber alert" stage.

If it's speed you want.. You should try Clear Halogen INC Bulbs. Try running them in the same manner you are currently running your UVB bulbs. I think you will be pleasantly surprised with the Halogen INC bulbs results. :thumbsup:

[Weezard]

You found the speed... Awsome!!!

Yup!
Now we're working on timing it's application for maximum effect.
At least I am.

OM's gonna irradiate the entire bloom period.
:weedpoke:
No point duplicating, "his words have iron"!

I'm gonna run up the trichs with 660nm. and push for a "carpet of caps all cloudy".:thumbsup:
Then I'm gonna "Tan" 'em with varying lengths of sunlight to see if that color change is cosmetic, or more than cosmetic:stoned:.
Last batches are still curing.

Howzit goin' on Mars?

Aloha.
Weeze

[Dogznova]

Weez... On mars it seems one can seriously increase the speed that's fo sure. But it's the increase in medical properties and flavor that seems to be the real attraction of mars. By manipulating the PAL and PAD time factors my uncle and I have been able to increase our current setup to aprx x 2 .. Let me explain....We were getting aprx somewhere around 15% (medical properties) on a strain that said 22% on the package. Now we are getting every bit of 30% with that strain....Believe it or not.... it's too strong for my uncle at 30%...So one of the ways we are working on solving this dilemma is by using different strains that are rated at aprx 10%-13% (medical properties) on the package and whacking it up to aprx 20%. He likes this medical range for his meds. There is also a plus to using these different strains. They yield a lot more meds for him. But just so you know the MASTERS are increasing the % to aprx x 6.. I know it sounds hard to believe that going from medical properties of 10%-20% too aprx 40%-60% with PAL and PAD light manipulation..... but I'm afraid it's true. Plus the speed at witch it's being done will blow your mind fo sure..

Soon my friends soon.. :thumbsup:

[shintoooo]

Hello All,

Very interesting reading here. I have been researching LED's for a while now and I am getting ready to do a LARGE LED grow.

I am customizing my own 600W LED lights based on the research I have done and there are still a couple of things that I need answers for before I begin.

Can anyone here help me out with this:

I have heard that 660nm Red extends the flowering cycle instead of reducing it. I have heard that it is better to use a combination of 640nm and 630nm instead of 660nm.

I appreciate all input.

[Weezard]

"I have heard that 660nm Red extends the flowering cycle instead of reducing it. I have heard that it is better to use a combination of 640nm and 630nm instead of 660nm."

Aloha Shintooo

Hearsay, being what it is, can be misleading.
I don't claim to be an expert, but my experimentation indicates that 660nm.
deep red is the most efficient wavelength for cannabis photosynthesis.
(Actually is 657nm. according to the books.)
If, it does indeed extend the flower cycle, that's a good thing for personal grows.
Allows one to really pack on the resin.
So, might take longer, but medically, it's a net win in Milligrams/Gram of active ingredient.

2 cents, please.
Weeze

[DreadedHermie]

I have heard that it is better to use a combination of 640nm and 630nm instead of 660nm.

I also have read that--in a European forum a while back-- but the author(s) were basing that assumption on charts and graphs and had no actual 660 nm emitters to test. There was also some speculation about 660nm emitters basically lacking "plant-growing energy" compared to 630nm. Again, this was based solely on claimed diode specs, not any real-world experience with 660nm emitters. :wtf:

Shintoooo, if you get a chance, hunt up that data again if you can find it; let us know if it was backed up by any experimentation or if it's the same "according to established charts that we believe to be reliable" kinda assumptions that I read. (I remember it because it caused me some concern with my design. Glad I disregarded it. :thumbsup

I've done it side-by-side, and with the strains I tested, 660 won hands down over 630nm for resin production-- which is my area of interest.

I'm cornfused about combining 630 and 640 nm reds. You could probably label a lot of emitters either way. (Leds emit a (narrow) bandwidth; not just the "named" frequency, of course.) What reds are you considering @ 640nm?

600W is a formidable complement of leds. You could integrate both frequencies (660 and 630) into different coverage areas and test it for yourself. Whatcha building?

[oldmac]

If it's speed you want.. You should try Clear Halogen INC Bulbs. Try running them in the same manner you are currently running your UVB bulbs. I think you will be pleasantly surprised with the Halogen INC bulbs results. :thumbsup:

Hey dogz, could you steer me to more info or a source for the clear halogen INC bulbs. I saw halogens being used a few years back in a grow that was in Europe I believe, they interested me then and now you made me real curious.
Thanks.