24/7 vs 18/6

[Mushaman]

I've been using 24/7 on my seedlings in a nutritec cloning chamber until they were 3" and then moving them to a 400w HPS multi spectrum light, also 24/7 - I have a max grow height of about 4feet and I am wondering if using 24/7 will give me too much height before flowering, or doesn't it make much difference?

any advice would be appreciated

[Guest Eikel]

Hi Mushaman,

 

Light-cycles only affect height dependant on how long you veg them for.

A plant vegged at 18/6 for 4 weeks could technically be the same size as a plant vegged for 3 weeks under 24/7 (this is probably innaccurate, but I used it for the analogy).

 

24/7 - Highest rate of plant growth, lower overall plant health.

 

18/6 - Slower growth than 24/7, better overall plant health.

 

I would state that: Assuming your plants are in peak health and condition you will have no problems under a 24/7 light-cycle.

 

That said however, I prefer to run my plants at 18/6, overall plants have a stronger immune-system and better overall health/stress-tolerance if they are given a dark-cycle even in veg.

 

Disclaimer:

This advice is based on my humble experience of 2.5 grows and involves assumptions based on the observation of my own plants.

[WantDaChronic]

i havent really noticed much difference between 24/7 and 18/6 light cycles except the plants are slightly bigger under 24/7 and are usually very sad looking....under 18/6, sure they get all droopy, but after an hour of the light being on, they are all perky and happy again

 

That said however, I prefer to run my plants at 18/6, overall plants have a stronger immune-system and better overall health/stress-tolerance if they are given a dark-cycle even in veg.

 

i agree, the plants do look much healthier and happier in my expierences too

[Mushaman]

Hi Mushaman,

 

Light-cycles only affect height dependant on how long you veg them for.

A plant vegged at 18/6 for 4 weeks could technically be the same size as a plant vegged for 3 weeks under 24/7 (this is probably innaccurate, but I used it for the analogy).

 

24/7 - Highest rate of plant growth, lower overall plant health.

 

18/6 - Slower growth than 24/7, better overall plant health.

 

I would state that: Assuming your plants are in peak health and condition you will have no problems under a 24/7 light-cycle.

 

That said however, I prefer to run my plants at 18/6, overall plants have a stronger immune-system and better overall health/stress-tolerance if they are given a dark-cycle even in veg.

 

Disclaimer:

This advice is based on my humble experience of 2.5 grows and involves assumptions based on the observation of my own plants.

<{POST_SNAPBACK}>

 

 

Hi Elkel and Wantdachronic

 

thanks for the advice

I think I will keep them under the 24/7 for now .. unless they stop looking so damm beautiful an healthy (I read something about keeping the cycle constant after you start it.. hermies? or more males vs females?)

[Mushaman]

i havent really noticed much difference between 24/7 and 18/6 light cycles except the plants are slightly bigger under 24/7 and are usually very sad looking....under 18/6, sure they get all droopy, but after an hour of the light being on, they are all perky and happy again

i agree, the plants do look much healthier and happier in my expierences too 

<{POST_SNAPBACK}>

Hi Wantdachronic

 

thanks for the advice

I think I will keep them under the 24/7 for now .. unless they stop looking so damm beautiful an healthy (I read something about keeping the cycle constant after you start it.. hermies? or more males vs females?)

[Guest Eikel]

Hi Elkel and Wantdachronic

 

thanks for the advice 

 

No worries Mushaman, hope it helped.

 

I think I will keep them under the 24/7 for now .. unless they stop looking so damm beautiful an healthy    (I read something about keeping the cycle constant after you start it.. hermies? or more males vs females?)

 

Whether you run on 24/7 or 18/6 is really "growers preference", but as both WDC and I said, plants with a dark-cycle seem to be happier overall and show least symptoms of trouble.

 

About the constant light - I've changed plants from 24/7 to 20/4, 18/6 to 12/12 and never had any problems. Hermies occur from light-stress when plants are in flower, I don't think you can hurt your plants by changing light-cycles while in veg.

[Mushaman]

Whether you run on 24/7 or 18/6 is really "growers preference", but as both WDC and I said, plants with a dark-cycle seem to be happier overall and show least symptoms of trouble.

 

About the constant light - I've changed plants from 24/7 to 20/4, 18/6 to 12/12 and never had any problems. Hermies occur from light-stress when plants are in flower, I don't think you can hurt your plants by changing light-cycles while in veg.

<{POST_SNAPBACK}>

 

Cool - thanks a lot Elkel - your info definately helped and its one less thing I have to wonder about :thumbsup

[keepleft]

agree plants look healthier when run 18/6 - but in winter when it gets cold, running 24/7 gives better temp consistency. too hard to run 24/7 in the blistering heat of summer! 18/6 or at the most 20/4 is req at least to give the heat a chance to escape.

[Nath]

Ive always vegged under 24/0 until the start of this year.. then it was 18/6. Plants dont need to 'sleep'.. they dont need darkness in veg.. 24/0 gets them cranking, but in the blistering Perth summer heat (We havent got much heat this summer ) Id be switching to 18/6 definately.

[Gazza2001au]

i never run 24/0 in my eyes plants need a rest and also does the equipment grwing ur veggies

WDC, i hear alot about peoples plants dropping at night any reason for this? all the grows ive done they stay perky :thumbsup