View Full Version : 12/12 light cycle

13-07-11, 07:20 PM
When should I start the 12/12 light cycle

13-07-11, 07:33 PM
When should I start the 12/12 light cycle

how big are your plants? or how old?

zen archer
13-07-11, 07:38 PM
Normally 4-5 weeks onward. Some people like to veg their plants longer, others will 12/12 from seed. pre-flower is usually a good time .:)

13-07-11, 07:41 PM
if you want a smallish plant do a 12/12 from seed,if you want a big plant veg for a good 4 to 6 weeks

13-07-11, 07:52 PM
some sats are best to 12/12 from the go (due to the 12/12 near cycle they get on the equator).
Indis prolly best to veg a few weeks.

13-07-11, 11:32 PM
My plant is 1ft 6inch and 5 months old

14-07-11, 01:38 PM
My plant is 1ft 6inch and 5 months old

1FT and 5 month old, something very wrong there!

14-07-11, 06:33 PM
Yeah I don't know what it is and it's just now starting to grow hairs

Mr Swilly
14-07-11, 06:42 PM
is it on a windowsill? hairs means its flowering
e2a sorry, hairs means its showing sex and is mature enough to go 12/12

14-07-11, 06:44 PM
bornallah,for gods sake get a pic up.

afgoo loo
14-07-11, 10:17 PM
I give veg an extra week if I want bigger plants(make sure you adjust nutes accordingly). Depends on the strain. GDP is a small plant with a smallish yield, so I go 7 weeks(soil) then flip. But now I've been using CO2 during veg it's more like 5 weeks.

Been reading about gradual reduction beyond just 12/12. Seems some guys are reducing the "lights on" time by a couple hours every week, starting week 2 of flower, resulting in 9 on and 15 off at time of harvest. This, aparently gives some urgency to the maturing of the flowers, reportedly producing more crystally, aromatic buds. AND saving $$$ on electricity... I wonderrrrrrrrr

15-07-11, 01:54 AM
I let it sit in the windowsill for 12 hours of light and I take it down for 12 hours of darkness

The blues man
19-07-11, 10:15 AM
My plant is 1ft 6inch and 5 months old
sumthing defo wrong there mine was 1ft and half at 4wk in veg