amount of par led grow lights

Kipn · Jan 18, 2018

hi growers. google sucks for looking up information easily so i thought id come ask on here.
so i am growing under led lights. cheap ones at the so dont hate on me too much. my question is apparently hanging my lights at 12 inches i get 1200 par and lower at 6 inches 2800 ish par . i can have my lights at 6 inches with out any heat problems but is it worth it. can or does a plant even need so much par. image is of week 3 flower would yous say lower lights more or bring them up. leds are viparspectra spectrum 600w real wats 270w

dtl420 · Jan 18, 2018

I googled "how much par is too much" for you. There's all kinds of info on google about it. The first comment on the provided link seems to explain it pretty well.

https://www.420magazine.com/forums/grow-lighting/262586-possible-have-too-much-light.html

Kipn · Jan 18, 2018

dtl420 said:
I googled "how much par is too much" for you. There's all kinds of info on google about it. The first comment on the provided link seems to explain it pretty well.

https://www.420magazine.com/forums/grow-lighting/262586-possible-have-too-much-light.html

ok ill look through it most site i ave come across only talk about hid or end up referring to them and going off topic. hmm that link didnt work for me

dtl420 · Jan 18, 2018

It works for me. If you google how much par is too much, you will get some results.

The parameters that determine how much light is too much are not specific to what kind of light, just light in general.

Lordhooha · Jan 18, 2018

Kipn said:
hi growers. google sucks for looking up information easily so i thought id come ask on here.
so i am growing under led lights. cheap ones at the so dont hate on me too much. my question is apparently hanging my lights at 12 inches i get 1200 par and lower at 6 inches 2800 ish par . i can have my lights at 6 inches with out any heat problems but is it worth it. can or does a plant even need so much par. image is of week 3 flower would yous say lower lights more or bring them up. leds are viparspectra spectrum 600w real wats 270w

You have a light meter?

Kipn · Jan 18, 2018

Lordhooha said:
You have a light meter?

they cost more then my lights. id love to buy one but if i had that extra money id buy better lights haha. i was more interested in knowing if i am wasting light by putting them so close and reducing the coverage aria

Lordhooha · Jan 18, 2018

Kipn said:
they cost more then my lights. id love to buy one but if i had that extra money id buy better lights haha. i was more interested in knowing if i am wasting light by putting them so close and reducing the coverage aria

The reason I asked is because you had the par listed. Must be from the makers of the light. Most times those number are bs. I have a par meter the one I have cost 180 ish when I bought it.

Kipn · Jan 18, 2018

Lordhooha said:
The reason I asked is because you had the par listed. Must be from the makers of the light. Most times those number are bs. I have a par meter the one I have cost 180 ish when I bought it.

oh yes out the booklet hmm i would imaging them to be close ish but i am sure they lie to make there product look better

Lordhooha · Jan 18, 2018

Kipn said:
oh yes out the booklet hmm i would imaging them to be close ish but i am sure they lie to make there product look better

Most burplelight companies do. Why I started building my own, now looking to build up QB light.

verticalgrow · Jan 18, 2018

Lordhooha said:
Most burplelight companies do. Why I started building my own, now looking to build up QB light.

Veg = 10 par watts/ft2
Flower= 20 par watt/ft2
CO2 = 30 par watts/ft2
:leaf:

Lordhooha · Jan 18, 2018

verticalgrow said:
Veg = 10 par watts/ft2
Flower= 20 par watt/ft2
CO2 = 30 par watts/ft2

You realize we weren’t talking about how many watts you need. We were however discussing the par output for a given light.

Lordhooha · Jan 18, 2018

verticalgrow said:
Veg = 10 par watts/ft2
Flower= 20 par watt/ft2
CO2 = 30 par watts/ft2

Besides avg is 50 watts per square foot for a grow space, not to mention I’m pretty positive you don’t know the actual par output for any led and the given chips usedor for any light for that matter. I can tell you for a fact that even chip for chip of my citizen 1818’s are exactly the same.

Kipn · Jan 18, 2018

Lordhooha said:
Besides avg is 50 watts per square foot for a grow space, not to mention I’m pretty positive you don’t know the actual par output for any led and the given chips usedor for any light for that matter. I can tell you for a fact that even chip for chip of my citizen 1818’s are exactly the same.

is there anything like this but with par reading
Veg = 10 par watts/ft2
Flower= 20 par watt/ft2
CO2 = 30 par watts/ft2

like eg veg needs 400 min par per foot and flower like 600 min or xxxx max

GBAUTO · Jan 18, 2018

Kipn said:
is there anything like this but with par reading
Veg = 10 par watts/ft2
Flower= 20 par watt/ft2
CO2 = 30 par watts/ft2

like eg veg needs 400 min par per foot and flower like 600 min or xxxx max

Are you asking for comparable ranges expressed in umoles/m2?

amount of par led grow lights

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