Has anyone done this before?

T

TroubleGuy

• Apr 7, 2009

• #1

Ok, to make it easy to understand, let's say my 12 on are from 8am to 8pm. Let's say I wanted to change it to be from midnight to noon.

Will adding an extra 30-60 minutes of light (or dark) per day until the cycle can run 12 on from midnight to noon cause any severe stress? I ask because obviously in nature there is no perfect 12/12, so it seems reasonable to assume that adding 30 minutes here and there to change the light cycle wouldn't be too stressful.

Am I wrong? Please don't tell me I am if you don't know from experience, this is something I haven't really heard of anyone doing and I would like to test it in a secondary flowering room.

 

P

purpledomgoddes

• Apr 8, 2009

• #2

http://www.icmag.com/ic/showthread.php?t=108613
thread on 16/12 light cycle w/ math.

ran 16/12, then 12/12, then 12/16, then 8/16, in 168 hr weeks.

can do any regime desired by using 168 hour week, having 6 days per week. then divide by 12, 16, 8, etc.

hope this helps.

 

I N Hail

Growing Grower AKA Wasted Rock Ranger

Veteran

• Apr 8, 2009

• #3

TG
Don't add any light's "on" time,you'll interrupt your Dark period

When your light's go out at 8pm reset your timer to 12:00noon for a 3/4 day's
Then 4pm,8pm,12midnight and your good to go it's only 4hr's of extended dark period
each change so NO PROB.

I N Hail

 

GMT

The Tri Guy

Veteran

• Apr 8, 2009

• #4

If your lights go off at 8 am and you want to switch to midnight to noon, just leave em off one day till midnight. No big deal.

 

T

TroubleGuy

• Apr 8, 2009

• #5

Thanks for the tips and that link.

 

D

DeebeeAhhSee

Member

• Apr 8, 2009

• #6

why would you switch from midnight til noon? Highrr prices for miday energy use, hotter temps if you go til noon, which means more usage of fans and possibly AC, which in turn sends you back to higher costs.
Just wondering what your pluses would be in switching.

 

DocLeaf

procreationist

ICMag Donor

Veteran

• Apr 8, 2009

• #7

Just put them to sleep for the extra hours,, then switch back on at 12.00 till 00.00

The important thing is to NOT disturb the 12 hours darkness.

All the best

 

T

TroubleGuy

• Apr 8, 2009

• #8

The times I gave aren't the actual times I'm switching to. Just used them as an example

And I don't think my area has cheaper electric rates at night...

 

T

TroubleGuy

• Apr 15, 2009

• #9

Just want to double check...extending the night cycle by a couple hours each day until I'm at the 12/12 hours I want won't hurt them? Not something I've done before, don't wanna hurt the girls...

no extra light, just extra dark. Can I just leave them off an extra....7 hours one time and flip lights back on then resume 12/12 from the new time? i'd kinda like to get it all done with in one go if it won't hurt the plants. also, found out my area does have cheaper electric at off-peak hours

 

Mr. Stinky

Member

• Apr 15, 2009

• #10

TroubleGuy said:

Can I just leave them off an extra....7 hours one time and flip lights back on then resume 12/12 from the new time?

Click to expand...

yes.

 

T

TroubleGuy

• Apr 15, 2009

• #11

and no hermies when they come back on? this is the paranoid stoner in me asking, haha... just reallllllllly hesitate to do anything unless i'm sure it won't make them hermie.

 

GMT

The Tri Guy

Veteran

• Apr 15, 2009

• #12

depends, if they are hermies then they will hermie, if they arent they wont.

 

KUSHEATER1

Active member

• Apr 15, 2009

• #13

shouldn't harm them at all just a little extra darkness change it and let them do what it do...

 

T

TroubleGuy

• Apr 15, 2009

• #14

Cool, thanks. adjusting light cycle tonight...