New Beginnings for Massachussetts and I

My new seedlings are retarded by a couple days. Not sure if it is nutes or light it is needing. I lowered the 148w cob lights to about 18". Still under 30k lux.

Since my seedlings are a light side of green they will get a nute raise on Tuesday, Their next water to runoff day.

Looks like it's going to be 500-600g for my whole first run.

First 2 months@ 1000w hid . Last 7 weeks at 480w cobs. A bit under 1w-1g. I will do better next time.

My new seedlings will only be three weeks old by the time they hit the flower tent. I was going to mainline them but I've decided to grow them as fast as possible without any high stress training. Since the next batch will only be 3 weeks behind I will do a lot of high stress training on them to try to slow them down.
How do you like the cob leds so far? I'm very interested in buying one. As I am extremely happy with my 600w led for veg so far but I feel it will be insufficient for flower.
 
How do you like the cob leds so far? I'm very interested in buying one. As I am extremely happy with my 600w led for veg so far but I feel it will be insufficient for flower.
I don't have a lot of basis for comparison, but I think the COB fixture I built is creating a "bigly" good environment for the plants.
Whose light do you have for veg? Is it 600w at the wall or just rated as a 600w hid replacement?
If you give us your tent specs I can suggest what you might consider for a flower light. As a rule of thumb with hps for flower, I would need at least a 1000w hps for this tent with the attendant heat issues. This fixture with 16 50w COBS pulls 800w at the wall with 56% efficiency and generates very little heat relative to the hps bulbs. With nothing but the filtered exhaust fan the tent stays between 75-80F during the "day".

Here's a shot of my fixture in a 5x5 flower tent
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And some more recent shots week 3 of flower
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I don't have a lot of basis for comparison, but I think the COB fixture I built is creating a "bigly" good environment for the plants.
Whose light do you have for veg? Is it 600w at the wall or just rated as a 600w hid replacement?
If you give us your tent specs I can suggest what you might consider for a flower light. As a rule of thumb with hps for flower, I would need at least a 1000w hps for this tent with the attendant heat issues. This fixture with 16 50w COBS pulls 800w at the wall with 56% efficiency and generates very little heat relative to the hps bulbs. With nothing but the filtered exhaust fan the tent stays between 75-80F during the "day".

Here's a shot of my fixture in a 5x5 flower tent
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And some more recent shots week 3 of flower
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I have a meizhi 600w it pulls 270 from the wall it's a cheaper led like 150 bucks cheap but getting great results. I'm growing in a 4×3 closet. I stay around 70 with 65rh with my humidifier I have in there. I plan to flower 2 -3 plants in there at some point. Right now got 5 from seed n the closet till transplant outside.
 

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I have a meizhi 600w it pulls 270 from the wall it's a cheaper led like 150 bucks cheap but getting great results. I'm growing in a 4×3 closet. I stay around 70 with 65rh with my humidifier I have in there. I plan to flower 2 -3 plants in there at some point. Right now got 5 from seed n the closet till transplant outside.

Are you interested in building something or just fully configured lights?
 
Timber grow lights is a good option if you want to go cobs and don't want to think or work too hard.

But if cost is your issue, you can find used HPS hoods, bulbs and ballasts on craigslist for a song and maybe a little bud. People are having trouble giving them away. They certainly work, but create a lot of heat and you need more watts to run them at an equiv photon density. You could look for 8-12 bulb t5 fixtures also.
 
My cost I'd say no more than 350. I can't do hps cuz of heat issues n venting. T5 fixtures are a bit big for my closet. I was originally using cfl spirals before I got the MEIZHI 600 reflector led. I'm gonna stay with led. I'll look into timber lights. Thanks for the info
 
Thanks to Stebbins for all the help today- I was checking Res.times 8 while he was trimming up my plants- Now much more light getting to my inner buds; thanks again ,my friend. Was able to send him home with more sugar trim and a bagful of cuttings to make some more cookies** save me one** Good day was had by all!!
 
Thanks to Stebbins for all the help today- I was checking Res.times 8 while he was trimming up my plants- Now much more light getting to my inner buds; thanks again ,my friend. Was able to send him home with more sugar trim and a bagful of cuttings to make some more cookies** save me one** Good day was had by all!!
You central MA guys have all the fun. I spent hours today trimming things up, arranging buds, and mixing nutes .... alone :(
Today started week 4 of flower
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Chopped my last auto today. 110 days from Germ. Another 3 coat hangers full of Bud. Only took me 3 hours to trim up. I am so glad I am harvesting 1 or 2 plants at a time.


How do you like the cob leds so far

Unfortunately, since this is my first grow, I have nothing to compare it with. My electricity bill loves them. My buds have Frosty crystals all over them. Right now I'm running 8 cobs in my flowering tent. I think the spectrum is amazing on these 3000k citizen Gen 6 1818's. I am getting about 700 ppfd in A 4x4 area for 480w. That's way more light then I need for my medical needs.

Here is a pic of my last plant in her 10 gal pot. It was flowered almost entirely under my cobs. Week 9 of flower. She is currently drying out before I put her into pre-chop darkness. I made nearly every classic newbie mistake and they still out produced my expectations.
 

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And we are rolling right along, day 75 for white widow, and day 45 for little HBSS..I cant believe I got them THIS far :-) Gotta figure out how to stake up the WW....she looks like she is getting heavy, good sign!!
 

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My cost I'd say no more than 350. I can't do hps cuz of heat issues n venting. T5 fixtures are a bit big for my closet. I was originally using cfl spirals before I got the MEIZHI 600 reflector led. I'm gonna stay with led. I'll look into timber lights. Thanks for the info
About $400 and you can build your own 300watt 2.1amp cree cxb 3590 3500k, all you really need is to buy a 120volt plug for the driver and a little bit of 18awg solid core copper wire, and angled aluminum or any kinda of framing you want, should be able to get most of that space with 4 chips, probably be able to do a 2x4 easy, 3x4 would be pushin it, can buy all cobs, driver, reflectors and thermal pads from rapidled
http://www.rapidled.com/cobs/
Heatsinks from northern grow lights- SST 133mm heatsinks
https://northerngrowlights.com/products/sst133-passive-heatsink?variant=28957566280
 
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And we are rolling right along, day 75 for white widow, and day 45 for little HBSS..I cant believe I got them THIS far :-) Gotta figure out how to stake up the WW....she looks like she is getting heavy, good sign!!

Looking good Mom. Ready for the next step? Drying was the most nerve wracking part for me. lol

Oh, Fiskars Duck Edition scissors and the Harvest More Trim Bin have changed my life. Mostly the scissors :bigjoint:
 
My cost I'd say no more than 350. I can't do hps cuz of heat issues n venting. T5 fixtures are a bit big for my closet. I was originally using cfl spirals before I got the MEIZHI 600 reflector led. I'm gonna stay with led. I'll look into timber lights. Thanks for the info

You could get a couple of these to supplement or replace your LED. One or 2 on either side of your light at an angle. Killin it!
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https://www.cobshop.net/shop?olsFocus=false&olsPage=products
Send him an email for quantities not listed.
 
Week 6 flower updates, plants doing well, switched to bloom nutes only now
 

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Few more
 

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