First time DIY Cob, how did I do?

Danielson999

Danielson999

Well-Known Member
If you read the All Things Vero thread people do report a slightly shorter flower time using 90cri and it seems many are using it. OP, I would check out that thread on page 3. You won't go wrong getting 80cri or 90 but it seems like the 90cri are flavor of the month.
 
nevergoodenuf

nevergoodenuf

Well-Known Member
You are totally right, either one kicks ass. Front to back-4000k/70cri, 3500k/80cri, and 3000k 90cri. Not at all happy with the 4000k/70cri (now gone). The 3000k/90cri still looks like a MH next to the DE to the left. IMG_20170313_203445372.jpg
 
M

MissyGoddess

Well-Known Member
I am using 90 CRI 2700k cobs along with 730nm monos for putting them to sleep at night. My 8 week strains just hit week 9 today and still questionable if I chop today will it be too early going off trich colors. I don't buy into 90cri or 730nm shortening flowering at all.
 
coreywebster

coreywebster

Well-Known Member
MissyGoddess said:
I am using 90 CRI 2700k cobs along with 730nm monos for putting them to sleep at night. My 8 week strains just hit week 9 today and still questionable if I chop today will it be too early going off trich colors. I don't buy into 90cri or 730nm shortening flowering at all.
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Just out of interest how many times did you run that strain previous to using 90cri with the monos and what lights did you use before?
 
KonopCh

KonopCh

Well-Known Member
Danielson999 said:
People are used to quoting spectrums for Cree and Citi cobs typically but Vero are not quite the same. As you can see in the graph, 3000K is going to give you 100% flower power :leaf: but if a person were wanting to use the lights from veg to flower, you would still be getting almost 90% of the power in flower with 4000K but also 100% of the veg power compared to only 55% of veg power with 3000K.
Something to consider anyway. 4000K makes a great all-round spectrum with Vero 29 cobs.

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50% blue for vegging isn't enough?
 
Rahz

Rahz

Well-Known Member
50% is the relative power distribution in the graph. The actual percentage of blue in the 3000/80 CRI is about 12.5% For the 3000/90 it's about 8.5%. To compare, HPS bulbs provide 4-5% in the blue range.

8.5 is actually plenty of blue to veg.
 
KonopCh

KonopCh

Well-Known Member
Danielson999 said:
Sure it is, it just means you need to run your light harder to equal what a more efficient spectrum gives you.
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Sorry I don't understand you (english is not my mother language). Could you explain please?

Second... We see that people veg with 3000K or 3500K, which is waaay better spectrum than HPS. But... is that optimal? 50% for all around light from veg to flower? If we go with 4000K, then we don't have optimal flower spectrum (2700, 3000). Optimal/near optimal of course.
 
Danielson999

Danielson999

Well-Known Member
KonopCh said:
Sorry I don't understand you (english is not my mother language). Could you explain please?

Second... We see that people veg with 3000K or 3500K, which is waaay better spectrum than HPS. But... is that optimal? 50% for all around light from veg to flower? If we go with 4000K, then we don't have optimal flower spectrum (2700, 3000). Optimal/near optimal of course.
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Depending on how you grow, you might prefer 2700K in veg. People seem to use every spectrum from veg through flower and are happy so I don't think it matters alot.
 
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