when do i switch to 12/12

baddog420

Active Member
my baby is only a month old and is very strong when do i change the lighting to 12/12 its bout a foot tall already
 

jdub3916

Active Member
my baby is only a month old and is very strong when do i change the lighting to 12/12 its bout a foot tall already
It depends on how much space you have to flower in... It will definitely double in size, if not more. What are your dimensions for your grow space? What kind of lighting are you using?
 

pppfemguy

Well-Known Member
yea its really all on how much space u got like in my grow room i got like 8 ft high ceiling so im able to veg for a while but not many ppl have that much room so yea it really all depends on how much space u got
 

baddog420

Active Member
i have plenty of space so that wont be a problem its only been a month since it sprouted and is thick should i wait a couple more weeks or go and do it asap
 

Jogro

Well-Known Member
When you switch depends on:


--How much vertical space you have and what strain you're growing.

A good rule of thumb is that plants will double in height after going to 12-12. Some sativa-dominant plants can TRIPLE in height. So when your plants are a little under half-way as tall as your growing space, you may want to switch the lights. Note that you can reduce overall vertical height by "training" your plants (SCROG, bending, etc).

Some people run 12-12 from seed, to keep the plants as small/compact as possible. This makes sense if you're growing in a small enclosed space.


--When you want to harvest.

Obviously, if you want a harvest at a certain time, you need to start your flowering 6-10 weeks before (again, depending on how long it takes your particular strain to mature).


--How much you want to yield.

The bigger your plants get in veg, the bigger they'll be in flowering, and the higher the ultimate yield (to a point. . .plants will become limited by the amount of light you have and the size of the pot they're in).
 
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