Umols with COBs

OrganicGorilla

Well-Known Member

• Jun 29, 2017

• #1

How many Umols should you shoot for in Veg and how many in Flower with COBs

 

Rahz

Well-Known Member

• Jun 29, 2017

• #2

I've had good success with 450 PPFD in veg and 750 in flower. If you have plenty of space I think keeping PPFD under 1000 during flower is a good idea. Umols to hit those numbers will depend on space being used.

 

CobKits

Well-Known Member

• Jun 29, 2017

• #3

depends on a lot of factors there is no one answer

 

OrganicGorilla

Well-Known Member

• Jun 29, 2017

• #4

CobKits said:

depends on a lot of factors there is no one answer

Click to expand...

4x4 tent and lights at 18"

 

CobKits

Well-Known Member

• Jun 29, 2017

• #5

those arent factors. PPFD is independent of canopy size and fixture height

i mean like strain, temp/humidity/co2, size and age and number of plants, if your goal is yield per sq ft or yield per watt, etc etc.

ask 10 people you'll get 10 different answers

 

OrganicGorilla

Well-Known Member

• Jun 29, 2017

• #6

CobKits said:

those arent factors. PPFD is independent of canopy size and fixture height

i mean like strain, temp/humidity/co2, size and age and number of plants, if your goal is yield per sq ft or yield per watt, etc etc.

ask 10 people you'll get 10 different answers

Click to expand...

So basically trial and error

 

CobKits

Well-Known Member

• Jun 29, 2017

• #7

not at all. it helps to know what your goals are and then you can measure the metrics