cob vs quantum
- Thread starter music64
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wietefras
Well-Known Member
Quantum boards are more efficient at the advised power levels, but you can run COBs at lower power levels too and achieve the same efficiency (say a Citizen 1212 @ 25W or a 1825 at 70W). It's really mostly marketing which efficacy they put on the product since in reality it's such a wide range.
Problem with quantum boards is that they need to be quite high above the canopy. Which means you lose a lot of light on the wall. Easily 20% more than you lose with COBs when you hang one COB per sqft.
I'd go with led strips though. Easier to use and even better light distribution than COBs.
Problem with quantum boards is that they need to be quite high above the canopy. Which means you lose a lot of light on the wall. Easily 20% more than you lose with COBs when you hang one COB per sqft.
I'd go with led strips though. Easier to use and even better light distribution than COBs.
InTheValley
Well-Known Member
I can tell ya this, My COBS are kickin ass, with just 225 ish watts in a 3x4 area. Ill get a true feel for them this next run, Im going to scrog 2 plants out and see what happens, just waiting for these 12/12 from seeds to finish. I already have the 2 females groomed and ready for transplant into 3gallon fabs tomorrow, from solo cups.
at 225 watts, Im getting nice buds as far as 40 inches from the light, and 80,000 lux at 14inches, about where my tops are. No burning, just BIG ass colas. Ive gotten them as close as 6 inches under the light, and still no burn issues, slight foxtail, but giant calyxes.
I got 66grams off my last 12/12 from seed, that grew 40 inches tall, and got buds to the bottom. I crossed that strain ( male seed ) Think its Lemon Thai, with my FireOG and now growing my own strain, WOoot.
Pics do no justice,
and something to note, The plant on the right, I half leafstripped, and as you can see, major difference from the side not stripped, and the side stripped. Slowed the stretch and the development so far. Still nice buds, but definitely smaller, and stunted the stretch. Just wanted to say that. I did it to see how she reacted to leaf stripping, seeing its the first time Ive even grown this strain. Good, learnt experiment id say thus far, lol..
Oh, I also do use the Perfect sun mini for 2 hours a day, 1 hour sunrise, and 1 hour sunset, also use the Night Intitation puck,
at 225 watts, Im getting nice buds as far as 40 inches from the light, and 80,000 lux at 14inches, about where my tops are. No burning, just BIG ass colas. Ive gotten them as close as 6 inches under the light, and still no burn issues, slight foxtail, but giant calyxes.
I got 66grams off my last 12/12 from seed, that grew 40 inches tall, and got buds to the bottom. I crossed that strain ( male seed ) Think its Lemon Thai, with my FireOG and now growing my own strain, WOoot.
Pics do no justice,
and something to note, The plant on the right, I half leafstripped, and as you can see, major difference from the side not stripped, and the side stripped. Slowed the stretch and the development so far. Still nice buds, but definitely smaller, and stunted the stretch. Just wanted to say that. I did it to see how she reacted to leaf stripping, seeing its the first time Ive even grown this strain. Good, learnt experiment id say thus far, lol..
Oh, I also do use the Perfect sun mini for 2 hours a day, 1 hour sunrise, and 1 hour sunset, also use the Night Intitation puck,
InTheValley
Well-Known Member
Just bought a PAR meter, so we will know true numbers on my rig soon,
where did you get your par meter at?
InTheValley
Well-Known Member
Ebay, crappy Hydrofarm, but saving up for Cody's PAR meter from Nukeheads. Its used, so no big loss if its crap, but in the meantime, Ill give this a try,
InTheValley
Well-Known Member
$55 bucks, worth a try i guess, think its from a hydro store in Vegas,
Serverchris
Well-Known Member
Neither, build your own and get better coverage with samsung f series strips.
InTheValley
Well-Known Member
14 days later, transplanted solos into 3gallon fabs,
PAR meter never came, Fkn samsquanch got it evidently, lost in the mail, got money back, saving up for Nukeheads PAR meter @ $200, so got a automated drips system and a GrowBoss MegaMeter,(which is awesome).. Flipping these girls in 2 weeks. The buds are on day 58 of 70 days, flushing now,
Also, no longer using the Perfect Sun mini, got rid of it 2 weeks ago, So its just the 4 Luminus cxm22s, running at 250watts, ( light gains not noticeable intensity past 275watts. Going to step up to a different driver down the road to 2100ma instead of 1400ma. ( Luminus can handle 2200ma, 125 watts each )
PAR meter never came, Fkn samsquanch got it evidently, lost in the mail, got money back, saving up for Nukeheads PAR meter @ $200, so got a automated drips system and a GrowBoss MegaMeter,(which is awesome).. Flipping these girls in 2 weeks. The buds are on day 58 of 70 days, flushing now,
Also, no longer using the Perfect Sun mini, got rid of it 2 weeks ago, So its just the 4 Luminus cxm22s, running at 250watts, ( light gains not noticeable intensity past 275watts. Going to step up to a different driver down the road to 2100ma instead of 1400ma. ( Luminus can handle 2200ma, 125 watts each )
There's a cheaper one a lot of people use, but I can't recall the name right now. I'll post it later, or just ask the forum.
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PungentPete
Well-Known Member
Just curious as I am still learning.. I use a Lux meter designed for LED'S to measure the light intensity of my Timbers. I am vegging at 35k to 40k Lux at 20 inches right now.. If you already know what your Lux level is why would you need to get PAR meter also?
Rocket Soul
Well-Known Member
For white light theres conversion factors you can use, depending on the spectrum. I belive if you divide your lux by 69 (for 3000k 80cri) you get an approx of par. I usually estimate 150 par for every 10000 lux. Par meter is more vital with blurple or enhanced white spectrums.
InTheValley
Well-Known Member
OK, let me know.
Nukeheads PAR meter take into account for the farreds, making the reading much more precise, better then any PAR meter on the market, that Ive seen. PAR meter and a CO2 meter are the last pieces to my adventures in the garden,lol..
InTheValley
Well-Known Member
I think i have a pretty good reading from my Hacked Lux meter, but I would really like to know the true PAR from my set-up. Love to have a spectometer,
InTheValley
Well-Known Member
I get 86,000 lux in center at 10 inches, then the higher i go, the lower it goes, at 300watts, ( 1300PAR cov)
at 20 inches, i get 46,000 lux center ( 700PAR cov )
at 20 inches, i get 46,000 lux center ( 700PAR cov )
PungentPete
Well-Known Member
Thanks for the info... You can learn something new everyday.
The Hydyofarm is the one I was thinking of. Is there info on the Nukeheads meter, other than the video?
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What's crappy about it the Hydrofarm, Nukeheads says it's good?
