Cobs or QB which has better coverage

Which is better cobs or wb

  • Cobs

    Votes: 19 45.2%

  • Qb

    Votes: 23 54.8%
  • Total voters
    42
wietefras

wietefras

Well-Known Member
nc208 said:
That's why I wrote spaced properly
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But that's just it. A 100W COB or Board is going to sit on almost a 2x2 square. I wouldn't call that "properly spaced".

Although now you post a frame with 75W COBs instead of 100W.

Very little of that light is being wasted on walls, I found best response for my plants was at a 15" distance
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I usually see between 1% and 2% of light loss for every inch the height is increased. So I'd say you lose between 10% and 20% of the light by going from 5" to 15". Not sure if you feel that's very little, but in my personal opinion that seems quite a lot actually.

So yes it will work just "fine" of course, but I don't see how this is any better than using a led strip fixture. Or better than using say 9 COBs or 16 COBs (equally distributed) over that space.
 
whytewidow

whytewidow

Well-Known Member
I think I'm gonna go with quantum boards... 320watt kit. I feel that it best suits my growing style. The 260watt XL kit. That comes with two boards and a 41" heatsink. That there is two big of a space between the boards. The boards are only 11.25" that's 22.50" inches of used heat sink. That leaves 18.5" gap between boards. Give or take 1/2" I think the 320 kit with 3 boards on 36" heat sink would give alot better coverage
 
nc208

nc208

Well-Known Member
wietefras said:
But that's just it. A 100W COB or Board is going to sit on almost a 2x2 square. I wouldn't call that "properly spaced".

Although now you post a frame with 75W COBs instead of 100W.


I usually see between 1% and 2% of light loss for every inch the height is increased. So I'd say you lose between 10% and 20% of the light by going from 5" to 15". Not sure if you feel that's very little, but in my personal opinion that seems quite a lot actually.

So yes it will work just "fine" of course, but I don't see how this is any better than using a led strip fixture. Or better than using say 9 COBs or 16 COBs (equally distributed) over that space.
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Post some shots of your plants and your strip light, This site is about growing, show the OP some pics so they can compare.

My cobs can go up to 160w so what? What relevance does that comment have to do with anything?
 
swedsteven

swedsteven

Well-Known Member
Cob = trees style hobbies hummmm

Quantum = scrog work hard

I just switch to cob citezen 1212 gen 5
3000k 90 cri and some timber vero 400watts 3000k mix 3500k
 
nfhiggs

nfhiggs

Well-Known Member
whytewidow said:
Are those the gen 3s. I think I seen them on arrow or digikey. 27 bucks a strip
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That's for the 44" single row or the 22" double row. I just ordered 6 of the 22" single row for $14 each from Arrow. I should have them in hand tomorrow.
 
V

vertnugs

Well-Known Member
whytewidow said:
I looked at them briefly
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I like that they can be put where ever you want.I may still get some to put at the end of my lighting so i can use more of my space.


whytewidow said:
I'm really leaning towards the hlg 320watt kit
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I am probably getting this also for my veg tent.It's overkill for a veg setup for me but if i ever get a wild hair up my ass and say i wanna flower the tent out i can as it supposedly covers 5x2.5 for flower and that is the size of my veg tent.

I am a little at odds though as it's weird how the 320 kit and the 260 have the same size heat sink,with 2 different specs on flower foot print.I don't see how adding another board to the middle gives that much bigger of a foot print.But i don't really know squat on lighting.
 
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