16/8 or 18/6 light cycle??

mattisreal420

mattisreal420

Well-Known Member
due to some heat concerns i want to start my new crops(around a week old) at a 16/8 light cycle, i have always did a 18/6, but i wanted to get some advice on how a 16/8 hr cycle would do?? Does it make a big difference in growth compared to a 18/6??? does anyone here do, or ever did a 16/8 cycle all the way through veg?? any comments will be greatly appriciated.
 
goten

goten

Well-Known Member
mattisreal420 said:
due to some heat concerns i want to start my new crops(around a week old) at a 16/8 light cycle, i have always did a 18/6, but i wanted to get some advice on how a 16/8 hr cycle would do?? Does it make a big difference in growth compared to a 18/6??? does anyone here do, or ever did a 16/8 cycle all the way through veg?? any comments will be greatly appriciated.
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humm..never done 16/8
i would assume that they might try to streatch a little more
being in the dark 2hrs longer...
 
northeastern lights

northeastern lights

Well-Known Member
My guess is 2 hours difference.

But really your room is not going to completley cool in 2 hours probably. I would stick with 18/6. Just my 2 cents.
 
mattisreal420

mattisreal420

Well-Known Member
i Am Just trying to go 16/8 because i have heat and humidity issues in my grow room, and for me it does seem to help a little with that. but i plan on to switching them back to 18/6 after i got my heat/humidity under control with upgrades, but i rather just do a 16/8 straight through the whole veg. Just trying to get someone that has or has information on doing a 16/8, like if it makes a diffence in growth then a 18/6, it is just 2 hrs diffence. anyone??

and BTW they are under a 1000 watt HPS, if that makes a diffence.
 
mattisreal420

mattisreal420

Well-Known Member
mygirls said:
youkeep saying heat,what is your temps.[/QUOTE

80 to 85, at the hottest and humidity i don`t know anymore, my gauge broke. but it is way up, 80 to 100% but these numbers are when it is the hottest of the day, in the morning it isen`t that bad. but i notice when i do the 16/8 it helps out. and i really wanna do a 16/8 straight through veg, but just wanna know if it makes a diffence in growth then doing a 18/6
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northeastern lights

northeastern lights

Well-Known Member
I run up to 90 in the summer with no issues. Humidity never gets above 60% with a norm of about 45%. 80% humidity is a cause for concern though. My humidity is less with the light on.
 
mygirls

mygirls

Medical Marijuana (MOD)
mattisreal420 said:
mygirls said:
youkeep saying heat,what is your temps.[/QUOTE

80 to 85, at the hottest and humidity i don`t know anymore, my gauge broke. but it is way up, 80 to 100% but these numbers are when it is the hottest of the day, in the morning it isen`t that bad. but i notice when i do the 16/8 it helps out. and i really wanna do a 16/8 straight through veg, but just wanna know if it makes a diffence in growth then doing a 18/6
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i run 85 degress most of the time..nothing wrongwith that tempas long as you have good air flow freash airbeing better,,:hump:
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northeastern lights

northeastern lights

Well-Known Member
mygirls said:
so you are pulling the hot air out of the room threw the light and exhausting out of the room right.. plants do look good..:hump:
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Yes. I have a line set up with a auto damper for the portable ac and one for the fan. just doesn't get it low enough to make the 6+ amp it draws worth it. I can be in the mid 70's in the winter. If my mother room was not running(250 mh) I could probably be able to keep it at the low 80's in the summer.
 
northeastern lights

northeastern lights

Well-Known Member
northeastern lights said:
Yes. I have a line set up with a auto damper for the portable ac and one for the fan. just doesn't get it low enough to make the 6+ amp it draws worth it. I can be in the mid 70's in the winter. If my mother room was not running(250 mh) I could probably be able to keep it at the low 80's in the summer.
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grown in 80-90 weather inside

EDIT: added the wrong pic, 2nd is corn lol
 

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M Blaze

M Blaze

Well-Known Member
mattisreal420 said:
due to some heat concerns i want to start my new crops(around a week old) at a 16/8 light cycle, i have always did a 18/6, but i wanted to get some advice on how a 16/8 hr cycle would do?? Does it make a big difference in growth compared to a 18/6??? does anyone here do, or ever did a 16/8 cycle all the way through veg?? any comments will be greatly appriciated.
Click to expand...
That wont help heat issues too much at all so get a better way of cooling instead. I have always done a minimum of 18 hours during veg but have done 10/14 during flower with great results.
 
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