once i get germinated seeds into my grow medium should i leave the room dark until they pop through the soil, or should i keep light on them from the start. (24/0 or 18/6). i've read a few threads and there seems to be some discripency. is there a rule of thumb, or just prefrence? thanks alot.
once germinated, light or no light?????
- Thread starter stankers
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Jakebakingcake
Chillaxn'
you get rep for reading some posts befor asking questions blindly. your right... there does seem to be alot of people that disagree on this one. and i am no expert so the best i can do is tell you what worked for me. and my plants are healthy and in their second week of flowering! i planted my germinated seeds tap root down in my soil medium and put 24 hours of light on them right away. people told me that it was a bad idea but i dont see how as my plants are doing great! ill do the same thing confidentally for my next grow and i would reccomend the same to you..
Highlighter
New Member
light is good as the plant will probably utilize everything thats available for development... warmth, moisture, light.. so the minute it pops up it needs light so its probably even better if there is light on them before they pop up...
Jakebakingcake
Chillaxn'
to add on that, unless you live in northern canada or alaska the natural summer light cycle is about 18/6 so when seeds sprout in nature they dont get an extended period of darkness and they have been sprouting for millions of years!!! the plus side to indoor growing is you can give it 24 hours of light and increase the rate of growth!!! thats a good rule of thumb for growing cannabis.........whenver you get stuck or confused just ask yourself;what would nature do??
mal_crane
Well-Known Member
Keep the light on once you put your germinated seed into the soil. It will need the light when it comes up and it can give the plant warmth as well. I personally set my timers for 18/6 so I don't have to worry about it. A 24hr light setting can turn more of your crop to males. Less light produces more females.
mal_crane
Well-Known Member
Yup. They're are also other things besides lighting and genetics that can affect the sex of your plants.
This is an excerpt from Dutch Passions:
From literature and our own findings it appears that the growth of a male or female plant from seed, except for the predisposition in the gender chromosomes, also depends on various environmental factors. The environmental factors that influence gender are:
I've followed the rules of this list for around twenty some grows and it hasn't failed me yet with only a 5-10% ratio of males coming from non-feminised seeds.
This is an excerpt from Dutch Passions:
From literature and our own findings it appears that the growth of a male or female plant from seed, except for the predisposition in the gender chromosomes, also depends on various environmental factors. The environmental factors that influence gender are:
- a higher nitrogen concentration will give more females.
- a higher potassium concentration will give more males.
- a higher humidity will give more females.
- a lower temperature will give more females.
- more blue light will give more females.
- Fewer hours of light will give more females.
I've followed the rules of this list for around twenty some grows and it hasn't failed me yet with only a 5-10% ratio of males coming from non-feminised seeds.
I believe that there is some contention here on the issue:
The 18/6 light cycle supposedly has a higher chance of hermaphrodism.
The 24/0 cycle is best for growth but doesn't get a "cooling off" period so the heat stress can lead to hermaphrodites, not neccessarily the light.
Each one seems to have a following but I lean towards 24/0 with good ventilation.
The 18/6 light cycle supposedly has a higher chance of hermaphrodism.
The 24/0 cycle is best for growth but doesn't get a "cooling off" period so the heat stress can lead to hermaphrodites, not neccessarily the light.
Each one seems to have a following but I lean towards 24/0 with good ventilation.
mal_crane
Well-Known Member
I have to disagree with you on 24/0 as I have everytime the issues comes up. I have personally tested the 18/6 and 24/0 and even the 12/12 theory and my results were that 24/0 has a much higher male ratio. I even asked skunk to prove my results wrong and no one has taken the challenge that I know of. Here is a thread from another forum. My results are the 7th post down. I also have some of my findings on RIU as well. How to alter the % of females - Growing Marijuana Forum
another thing to be sue of is acidity levels in ur soil or water, alkaline water usually make seeds pre domanantly male while slightly acidic turn female
skunkushybrid
New Member
This is complete bullshit... and you shouldn't be telling newbies this information like it is fact. You have no support for these claims. Keep them to yourself until you do.
skunkushybrid
New Member
Listen to King Kahuuna, in that link you posted. There's a guy that knows what he's talking about.
Sex reversal, just by using light schedule? and you laud this as fact?
Sex reversal, just by using light schedule? and you laud this as fact?