Brett Brown
Active Member
Thank you , that was the answer I was looking for I wasn't understanding that 20/4, 18 /6 etc. if you want to explain cool but not to important!!!! thanks man have a great day and happy growing! Thank You, BB2112
Preflower Help!
- Thread starter Nuclearbud
- Start date
Korner420Garden
Active Member
Those are the light schedules. Depending on who you ask, 24 hours of light and 0 dark is the best to veg plants. This would be referred to as 24/0. Other people prefer to give them a rest and put them on on/off schedules, like 20/4, 18/6, 16/8.
TheOrganic
Well-Known Member
24/0 that is demanding you in a hurry?
hazeforlife
Active Member
i suggest 24/0 under weak flo's n stuff, but under hid's I like 20/4
Brett Brown
Active Member
Thank you for the info, Now I 've pretty much got it. Thanks alot, to everyone that helped!!!! BB2112
24/0 is best. -Ed Rosenthal
This is a direct quote from Ed Rosenthal whom most of you know is a marijuana growing guru:
----------------------------------------------
marijuana plants photosynthesize as long as they receive light as well as water, air, nutrients and suitable temperature. Photosynthesis is the process in which plants use the energy from light (primarily in the blue and red spectrum's) to combine carbon dioxide (CO2) from the air and water (H2O) to make sugar while releasing oxygen to the air.
Plants use sugars continuously to fuel metabolic processes (living) as well as for tissue building. The plant combines nitrogen (N) with the sugar to make amino acids, the building blocks of proteins. They are the substance of plant tissue. When the light is off, the plant's metabolic processes, respiration and growth, continue.
The plant can photosynthesize continuously so it produces the most energy and growth when the light is on, continuously. Continuous light does not stress the plant, which reacts somewhat mechanistically to it.
Plants under an 18-6 light-dark regimen are producing sugar only three quarters of the time. They are thus growing at only 75% of their potential. Leaving the light on continuously will result in bigger plants, faster, which leads to higher yields."
-------------------------------------------------------------
"The following information is straight from Greg Green's "The Cannabis Grow Bible"
Cannabis is a light demanding plant. Professional growers keep the light on their plants using the 24/0 photoperiod for this reason. Plants that grow under 24/0 flourish and do not need a quantity of darkness in order to rest and perform photosynthesis properly. Plants that are grown in optimal conditions under 24/0 light regime grow vigorusly and the benefits of a 24/0 photoperiod can be seen actively in the results. More nodes are formed, more branches are created, leaf numbers increase, the plant is growing at its finest.
Some growers opt to use 18/6 as their photoperiod. This is 18 hours of light, six hours of darkness light regime. Under these conditions the plant will grow quite naturally but not as vigorously as the 24/0 photoperiod.
The 18/6 photoperiod expels 3/4 the amount of light that a 24/0 photoperiod does. Although this does not mean that a plant produces 1/4 less leaves,branches and nodes under the 18/6 photoperiod, it certainly does show the correlation between light and cannabis growth. As we have said already, cannabis is a light demanding plant. There are no problems associated with 24/0 and although some have attributed cannabis sexual dysfunction (the hermaphrodite conditon) to 18/6 photoperiod these problems are actually the result of heat stress.
A 24/0 photoperiod requires that your grow room temperature be kept well monitored. The 18/6 option is cheaper to run. You use a quarter less electricity and this will have an impact on your electricity bill. Also the 18/6 photoperiod will generally extend the bulb's lifespan. During the 6 hours of darkness the grow room is allowed to cool down for this period but a well maintained good grow room setup should not require a cooling down period.
24/0 and 18/6 both share the same problem though. Once you start the photoperiod you should keep that way especially when the plants near maturity (the preflowering stage). An irregular photoperiod can cause more males than females to develop. It can also cause sexual dysfunction to appear. Whether you choose 24/0 or 18/6 as your vegetative photoperiod try to keep that photoperiod unitl your plants are mature enough to express their sex."
24/0 is superior insofar as plant growth
---------------------------------------------------------------------------------
Most green plants are classified as either C3 or C4 which represents how carbon(C) is used during photosynthesis.
C4 plants temporarily store carbon dioxide(CO2) over the dark period to use for photosynthesis during the day. C4 plants slow down photosynthesis once the stored CO2 is used up and they need to gather it from the air. Which is why trees slow down photosynthesis in the afternoon even though the sun is still bright. This does NOT apply to cannabis.
C3 plants(cannabis/veggies) gather CO2 only during the light period when they are photosynthesizing. During the dark period these plants only use oxygen for their metabolic life processes. They don't uptake CO2, nor do they use it. As soon and as long as the light is on, C3 plants gather and use CO2 for photosynthesis.
C3 plants also have the ability to use higher concentrations of CO2 than what is found in the air. If the light is bright enough and the plants have sufficient nutes, their growth rate will accelerate from it(2000ppm vs. 400ppm of CO2), which increases yield. They can do this continuously, wihtout a dark period throughout the vegetative stage.
The dark reaction is a process of photosynthesis that takes place in both darkness and light. It uses ATP and NADPH molecules that hold energy absorbed from light to break apart CO2 into it's base components. Because it's called a dark reaction and can occur in the dark, some people(Jorge) have said darkness is needed for this to occur. This Is Not So.
Again people get anthropomorphic with their plant needs. People need rest, so plants must too. This is false as well. Light means growth. Scientifically. Although 18/6 will shock your plants less when you switch to 12/12, it's a personal choice whether you would rather sacrifice a little growth for a quicker adjustment or less photo confusion. If you want to save money or energy that's a personal choice too. Do what you need to do to make your growing scenario work.
This is a direct quote from Ed Rosenthal whom most of you know is a marijuana growing guru:
----------------------------------------------
marijuana plants photosynthesize as long as they receive light as well as water, air, nutrients and suitable temperature. Photosynthesis is the process in which plants use the energy from light (primarily in the blue and red spectrum's) to combine carbon dioxide (CO2) from the air and water (H2O) to make sugar while releasing oxygen to the air.
Plants use sugars continuously to fuel metabolic processes (living) as well as for tissue building. The plant combines nitrogen (N) with the sugar to make amino acids, the building blocks of proteins. They are the substance of plant tissue. When the light is off, the plant's metabolic processes, respiration and growth, continue.
The plant can photosynthesize continuously so it produces the most energy and growth when the light is on, continuously. Continuous light does not stress the plant, which reacts somewhat mechanistically to it.
Plants under an 18-6 light-dark regimen are producing sugar only three quarters of the time. They are thus growing at only 75% of their potential. Leaving the light on continuously will result in bigger plants, faster, which leads to higher yields."
-------------------------------------------------------------
"The following information is straight from Greg Green's "The Cannabis Grow Bible"
Cannabis is a light demanding plant. Professional growers keep the light on their plants using the 24/0 photoperiod for this reason. Plants that grow under 24/0 flourish and do not need a quantity of darkness in order to rest and perform photosynthesis properly. Plants that are grown in optimal conditions under 24/0 light regime grow vigorusly and the benefits of a 24/0 photoperiod can be seen actively in the results. More nodes are formed, more branches are created, leaf numbers increase, the plant is growing at its finest.
Some growers opt to use 18/6 as their photoperiod. This is 18 hours of light, six hours of darkness light regime. Under these conditions the plant will grow quite naturally but not as vigorously as the 24/0 photoperiod.
The 18/6 photoperiod expels 3/4 the amount of light that a 24/0 photoperiod does. Although this does not mean that a plant produces 1/4 less leaves,branches and nodes under the 18/6 photoperiod, it certainly does show the correlation between light and cannabis growth. As we have said already, cannabis is a light demanding plant. There are no problems associated with 24/0 and although some have attributed cannabis sexual dysfunction (the hermaphrodite conditon) to 18/6 photoperiod these problems are actually the result of heat stress.
A 24/0 photoperiod requires that your grow room temperature be kept well monitored. The 18/6 option is cheaper to run. You use a quarter less electricity and this will have an impact on your electricity bill. Also the 18/6 photoperiod will generally extend the bulb's lifespan. During the 6 hours of darkness the grow room is allowed to cool down for this period but a well maintained good grow room setup should not require a cooling down period.
24/0 and 18/6 both share the same problem though. Once you start the photoperiod you should keep that way especially when the plants near maturity (the preflowering stage). An irregular photoperiod can cause more males than females to develop. It can also cause sexual dysfunction to appear. Whether you choose 24/0 or 18/6 as your vegetative photoperiod try to keep that photoperiod unitl your plants are mature enough to express their sex."
24/0 is superior insofar as plant growth
---------------------------------------------------------------------------------
Most green plants are classified as either C3 or C4 which represents how carbon(C) is used during photosynthesis.
C4 plants temporarily store carbon dioxide(CO2) over the dark period to use for photosynthesis during the day. C4 plants slow down photosynthesis once the stored CO2 is used up and they need to gather it from the air. Which is why trees slow down photosynthesis in the afternoon even though the sun is still bright. This does NOT apply to cannabis.
C3 plants(cannabis/veggies) gather CO2 only during the light period when they are photosynthesizing. During the dark period these plants only use oxygen for their metabolic life processes. They don't uptake CO2, nor do they use it. As soon and as long as the light is on, C3 plants gather and use CO2 for photosynthesis.
C3 plants also have the ability to use higher concentrations of CO2 than what is found in the air. If the light is bright enough and the plants have sufficient nutes, their growth rate will accelerate from it(2000ppm vs. 400ppm of CO2), which increases yield. They can do this continuously, wihtout a dark period throughout the vegetative stage.
The dark reaction is a process of photosynthesis that takes place in both darkness and light. It uses ATP and NADPH molecules that hold energy absorbed from light to break apart CO2 into it's base components. Because it's called a dark reaction and can occur in the dark, some people(Jorge) have said darkness is needed for this to occur. This Is Not So.
Again people get anthropomorphic with their plant needs. People need rest, so plants must too. This is false as well. Light means growth. Scientifically. Although 18/6 will shock your plants less when you switch to 12/12, it's a personal choice whether you would rather sacrifice a little growth for a quicker adjustment or less photo confusion. If you want to save money or energy that's a personal choice too. Do what you need to do to make your growing scenario work.
Brett Brown
Active Member
Perfect that was an excellent post! Awesome information: Thank You very much:BB2112
I ALWAYS get that level of response from that post.
Brett Brown
Active Member
when you wrote to me and said it should be a kelvin cfl bulb 6500 are those bulbs the 15 inch 2 pin flourect bulbs or do they make them in those curly type also? I went to 1000bulbs.com and put in keyword kelvin 6500 and they brought up the kelvin tube bulb and then they listed a 6500k bulb but it was one of those that screw into a regular light socket. now is the k in 6500k mean kelvin even if it is not a tubed flourescent with the ballast and the two pin light socket? my main question is what the K means on a 6500K? because they listed one bulb that said 6500 kelvin but it was a tube the others were 6500k but they did not say kelvin just 6500K and they screwed into a normal light socket!!
Brett Brown
Active Member
Does it matter what kind of light I am using when I bring it in the house. I was told a cfl 6500 kelvin bulb which is a flourescent bulb but can I use any kind of light or does it have to be a certain kind? Thank you, for anyone who could answer this for me please!!!!, BB2112.
hazeforlife
Active Member
If it says 6500 K or Kelvin, either way it should be the right spectrum.. just try and get the highest (real) wattage you can.. lots of flo bulbs list wattage's but not the real ones.. look for real watts under power consumption... if you have enough money get a METAL HALIDE.. they produce alot more lumens per watt compared to flo's
Brett Brown
Active Member
Thanks, alot for writting back, I really appreciate it,BB2112
Korner420Garden
Active Member
they do make 6500k in the regular screw in light bulbs. Lowes, Home Depot has them. They're not hard to find.
Brett Brown
Active Member
Thank you man! very much!!!! I was really affraid to buy a bulb and then have to buy the ballast and the sockets. So that saved me a lot of money thanks!BB2112 because I was looking in amazon.com and found a nice metal halide bulb brand new, warranty for 16 months by GE. So Thanks!!!!
hazeforlife
Active Member
you do know that you need the ballest with the Metal Halide bulb.. right?
Brett Brown
Active Member
I do? It shows the piure of the bulbs to fit a regular socket though. So you have to also attach a ballast to that socket and then the cord to the ballast? Well then wouldn't it be cheaper to get a self contained florescent cfl that already has the ballast in it or starter? because those ballast were expensive, even on amazon.com.
Brett Brown
Active Member
So are you talking about the cfl flourescents or are there metal halide that have the self contained ballast?
hazeforlife
Active Member
You can use the 6500 CFL self ballested ones to grow allrigght stuff but a metal halide will be better.. and if you want to grow bud with your light I suggest you just get a HPS light
Korner420Garden
Active Member
Referring to regular CFL (cfl stands for Compact Flourescent Lighting) bulbs. I only grow one or two plants at a time and 6500K CFLs are perfect for vegging. I also flower with higher wattage 2700K CFLs, but I get ALOT of popcorn low on the plant come harvest.
gypsygreen
Well-Known Member
Preflowers will come any time after the plant has enetered the veg cycle. This in no way means that your plant is gonna flower soon, this is normal. Perhaps this will help:.View attachment 1616870
But yeah, they will show anytime after the plant has enetered veg cycle, but you could still have another 4-8 weeks of vegging before proper flowering
But yeah, they will show anytime after the plant has enetered veg cycle, but you could still have another 4-8 weeks of vegging before proper flowering