18/6 light cycle questions

aktopjian · Jul 20, 2008

On a 18/6 light cycle does the 6 hours of darkness have to be completely dark?

SoKo420 · Jul 20, 2008

yes it does.

dr.greenthumb85 · Jul 20, 2008

not so much on the veg cycle but flowering needs to be absolutly dark.

aktopjian · Jul 20, 2008

So it wont do anything to the plant if light next to the room it is in get into it?

masterkushner · Jul 20, 2008

aktopjian said:
So it wont do anything to the plant if light next to the room it is in get into it?

Nah. You'll be fine during the Veg stage. But when you switch to 12/12 you must have Complete Darkness !!! Good Luck. :peace:

superskunkxnl · Jul 20, 2008

for veg you can run 24/7 but its believed roots grow well at night? i like 20/4 myself but do whatever you want 18/6 is better for your pocket!

makinthemagic · Jul 20, 2008

i found that it helped to give them more and more darkness as they matured through veg.

FrostickZero · Jul 20, 2008

superskunkxnl said:
for veg you can run 24/7 but its believed roots grow well at night? i like 20/4 myself but do whatever you want 18/6 is better for your pocket!

if you have good enough lights yes 18/6 is better but if your usign CFL 24/0 is the best I'd find

aktopjian · Jul 20, 2008

Yea I have a 400mh light on them no cfl's. One more question if i goto anything other than 24hrs does that set the time my 12/12 is going to have to start when i get to that stage?

Cr8z13 · Jul 20, 2008

You can start 12/12 when your plant gets to roughly 33-50% of your desired final height. For now, the longer you run your lights during veg, the faster they'll get to your desired height before starting 12/12 for flowering.

aktopjian · Jul 20, 2008

Well i meant the time of day that i have to start the 12/12. Like if i shut the lights off for 6 hours in the day, does that mean when i decide to goto 12/12 do i have to start it at the end of the 6hrs of darkness?

Charred · Jul 20, 2008

no, not really.
i like to turn my light off for 24 hours to shock my plant into flowering, i find it showa sex quicker and induces flowering slightly quicker.
i do an 18/6 ratio on my 600w HPS and i have my 6 hours dark from around midnight to 6am.
when i think my plant is ready for flowering i'll turn my lights off at around 9am so i have 24 hours of dark then a 12/12 scheme from 9am to 9pm.

hey masterkushner i thought i had a bug crawling in my screen till i realised it was your avatar! lmao

RandyRocket · Jul 20, 2008

aktopjian said:
Well i meant the time of day that i have to start the 12/12. Like if i shut the lights off for 6 hours in the day, does that mean when i decide to goto 12/12 do i have to start it at the end of the 6hrs of darkness?

A lot of people go from 18/6 to 24 hours-36 hours of dark. then 12/12.

You can turn the lights off and set you timer to be on when ever you like. I keep my lights of at night it is easer to keep them in the dark at night. Some will only run lights at night to help with heat.

18/6 light cycle questions

aktopjian

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SoKo420

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dr.greenthumb85

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aktopjian

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masterkushner

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superskunkxnl

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makinthemagic

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FrostickZero

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aktopjian

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Cr8z13

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aktopjian

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Charred

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RandyRocket

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