LED Without LEDs -My First T5 Grow

pr0fesseur · Feb 19, 2012

pedro420 said:
That is some crazy prices

Hopefully something works out and we can get that beloved 660 nm bulb we all are seeking

I am committed to getting you guys the perfect bulb.. i will eat some cost up front knowing that in time i will be able to break even with my first order

Once i open my ebay store im sure the bulbs will sell out!

pedro420 · Feb 19, 2012

If the Ebay store is going to have the bulbs you listed and if they are a decent price I will difinatly order some

Undercover Cop · Feb 19, 2012

kpmarine said:
T5, T8, and T12 are all standardised diameter. The number in their name is that diameter in 8th's of an inch. i.e. T5's are 5/8", and so on. Or at least, that's how one of the lighting companies broke it down. They may have been oversimplifying to avoid questions though.

Nope thats right. if you can find some T2 aquarium bulbs (1/4") they blow T5 away for efficiency, but they're limited to 18" max... perfect for a clone box/moms.

I asked because it seemed abit thicker than a T5, and he said it was indeed a T8 (prob easier to make a proto with)

kpmarine · Feb 19, 2012

Undercover Cop said:
Nope thats right. if you can find some T2 aquarium bulbs (1/4") they blow T5 away for efficiency, but they're limited to 18" max... perfect for a clone box/moms.

I asked because it seemed abit thicker than a T5, and he said it was indeed a T8 (prob easier to make a proto with)

Oh, I misunderstood. I thought you were asking if it was an unusually thick T5. My apologies, I should have known you would know better than that. lol

BlueB · Feb 19, 2012

T8s are more efficient anyway, they don't even get hot to the touch.

BlueB · Feb 19, 2012

pr0fesseur said:
Thats the prototype and yes its a T8 this is just to get the color right...
heres a SPD to get ya drooling
View attachment 2069624

thats one crazy looking photo shopped spd graph, it really does look like the perfect spectrum, make sure your company gets those end caps glued on the right way!!!!!!!!!!!!!!!!!

kpmarine · Feb 20, 2012

BlueB said:
T8s are more efficient anyway, they don't even get hot to the touch.

On the contrary sir. They cost more than their increased efficiency warrants though. I assume due to the specialised market.

Courtesy of http://lightingsolutions.ca/index.php?option=com_content&view=article&id=25&Itemid=26

4. Why is T5 the best and how does that apply?
There are several different factors that determine levels of efficiency. Quality of light measured in CRI (Colour Rendering Index), quantity of light measured in LPW (Lumens per Watt) and CU (Co-efficiency of utilization.) The numbers being used for CU are general for those used in the low level (12 feet and under) multi-residential environment so there can be fluctuations.

CRI levels:	LPW levels:	CU (Generally):
T12 = 62CRI	T12 = 78LPW	T12 = .46CU
T8 = 85CRI	T8 = 92LPW	T8 = .76CU
T5 = 85CRI	T5 = 103LPW	T5 = .90CU

Considering these general factors, it is obvious that T5 is the best. But, how much better? With all factors weighed equally, a general presumption can be made, that:

a. T8 is 40% more efficient than T12.
b. T5 is 51% more efficient than T12.

BlueB · Feb 20, 2012

pr0fesseur said:
I am committed to getting you guys the perfect bulb.. i will eat some cost up front knowing that in time i will be able to break even with my first order Once i open my ebay store im sure the bulbs will sell out!

here is the perfect vase for your perfect blub, might not work with the 4 footers though,

BlueB · Feb 20, 2012

kpmarine said:
On the contrary sir. They cost more than their increased efficiency warrants though. I assume due to the specialised market.

Courtesy of http://lightingsolutions.ca/index.php?option=com_content&view=article&id=25&Itemid=26

4. Why is T5 the best and how does that apply?
There are several different factors that determine levels of efficiency. Quality of light measured in CRI (Colour Rendering Index), quantity of light measured in LPW (Lumens per Watt) and CU (Co-efficiency of utilization.) The numbers being used for CU are general for those used in the low level (12 feet and under) multi-residential environment so there can be fluctuations.

CRI levels: LPW levels: CU (Generally):
T12 = 62CRI T12 = 78LPW T12 = .46CU
T8 = 85CRI T8 = 92LPW T8 = .76CU
T5 = 85CRI T5 = 103LPW T5 = .90CU

Considering these general factors, it is obvious that T5 is the best. But, how much better? With all factors weighed equally, a general presumption can be made, that:

a. T8 is 40% more efficient than T12.

b. T5 is 51% more efficient than T12.

they dont heat up at all dude!!!!!!!!!!

kpmarine · Feb 20, 2012

pr0fesseur said:
hardest part is to convince manufacturer it will be worth it to buy 2k$ in phosphors for a 1K$ order LOL! the far red phosphor is quite expensive @ $195/Kilo 10Kilo minimum.... :-/

Have you contacted the other T5 thread? Maybe they would be interested. Any thoughts on that undercover? I know you were posting over there recently.

kpmarine · Feb 20, 2012

BlueB said:
they dont heat up at all dude!!!!!!!!!!

Well, reasonably a 4' long T8 is going to put off less heat. It puts off less light and has almost twice the surface area. While only consuming a little more energy. Twice the surface area means twice the heat dispersion area in theory.

kpmarine · Feb 20, 2012

There may have been one and I forgot it (I read most of this thread in one stretch.), but has anyone applied this method to autoflowers? I know they have fairly respectable yields from other methods, so I'm wondering if there have been positive results. Seeing as light maximisation is so important to these plants given their limited growth cycle.

Kite High · Feb 20, 2012

since you seem intent on covering these supposed important spectrums why do I see no source for uva-uvb and far red?? All proven to enhance cannabis potency and enable cannabinoid profile ratio manipulation?

kpmarine · Feb 20, 2012

Kite High said:
since you seem intent on covering these supposed important spectrums why do I see no source for uva-uvb and far red?? All proven to enhance cannabis potency and enable cannabinoid profile ratio manipulation?

Post #2974 and #2975 I think it was when i just checked. They're in the works. If you read the more recent posts, you'd see it was being worked on. Thanks to a desire and the tentative interest of a couple light manufacturers. I believe there's spectrograms and a picture of the prototype even. Give 'er a look.

AltarNation · Feb 20, 2012

kpmarine said:
Have you contacted the other T5 thread? Maybe they would be interested. Any thoughts on that undercover? I know you were posting over there recently.

This.

Also, can't wait to hear some price estimates per bulb, that will be a good day.

Lucius Vorenus · Mar 16, 2012

So what, we lost a months worth of posts?

Calrt · Mar 16, 2012

Lucius Vorenus said:
So what, we lost a months worth of posts?

what happened?

A.Green.Monster · Mar 16, 2012

Some one hacked the site. Looks like the last time they backed it up was a month ago, thus the lost posts.

AltarNation · Mar 16, 2012

Fuck.

Well, this makes me feel better about not posting my updates the other day. I guess I'll start up a new grow journal and get it goin' again.

Lucius Vorenus · Mar 16, 2012

A.Green.Monster said:
Some one hacked the site. Looks like the last time they backed it up was a month ago, thus the lost posts.

Actually they were doing a server update and possibly migration late last night for hours and someone fucked up. It happens very regularly when people decide to update databases. Especiaqlly when the person doing it doesn't have much knowledge of msql databases and vBulletin.

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