anywhere311
Well-Known Member
so i was wondering how much does a tiny bit of light or glow from light affect ur plants when they r sleeping?
light from outside grow room
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RooR RippeR
Active Member
even the tiniest crack of light could shock your plant, so it has to be completely dark.
Single White Pistol
Well-Known Member
How much light is too much light? Think of the brightest full moon you've ever seen. Plants flower naturally in that light at night. Anything more than that may shock your plants back into veg, but there's more of a chance of them just growing light weight fluffy buds.
Obviously you want pitch black. Just do what it takes and that question goes right out the window.
Obviously you want pitch black. Just do what it takes and that question goes right out the window.
Mcgician
Well-Known Member
http://www.maximumyield.com/article_sh_db.php?articleID=475&yearVar=2009&issueVar=September
"A current flowering technique becoming more common amongst growers is called light deprivation, also known as ‘blacking out,’ ‘light-dep’ and inducing photoperiod. To ‘light-dep’ a plant is to shorten the duration of its sun’s light cycle so as to encourage the plant to flower in a time of year that wouldn’t naturally trigger plants to flower outdoors.
For instance, by reducing the summer sun to only 12 hours of light, it would trigger the plant to recognize that the end of it’s life cycle is close and, therefore, begin the flowering/seed production phase of it’s life.
Obviously this method of farming is only beneficial for plants whose flowering cycle is determined by the amount of hours it gets of light and the number of hours it gets to rest and process its food. This technique affords the farmer several benefits. In environments that have a short growing season due to early/late frosts, light deprivation allows an outdoor crop to start flowering earlier than ‘full season’ plants, therefore, allowing for an earlier harvest and eliminating the detrimental effects of cold and frost to the crop. Multiple crops can be grown each year outdoors in the same amount of space that one crop would be grown in. The third and fourth cycles seem to have considerably less quantity of flower mass produced than the first two due to the decreasing potency of the autumn/winter sun. This method also gives the grower the ability to implement supplemental lighting within this new growing environment, allowing them the ability to extend their daylight hours when there is less than 12 hours of sunlight. This can be used to add some extra flowering hours or add even more hours of light to simulate the summer vegetative sun cycle. Some light deprivation supply companies offer lumen meters that automatically turn on your supplemental lighting when light levels go to low sun to foggy mornings, cloudy/rainy days and/or timer systems to control the lighting cycle. Overall, light deprivation gives you the best choice for low energy consumption growing using the free power of the sun while allowing for multiple high yield, high quality crops.
When a grower is choosing a design one should consider a company that automates their systems under greenhouse material or creating a manual system themselves that is covered by an outer layer of greenhouse material.
These days growing has a lot to do not only with quality and variety but the time of the season in which you can market your products. There’s nothing like having a bumper crop of tomatoes at the same time every other farmer just harvested their crop. Instead, by using the control that light deprivation offers to the farmer you can have a high quality crop available when everyone else’s flower sites are just starting to develop and/or your second crop harvested when all the long season growers are just starting to get prepared for the harvest season.
This all sounds great, so what's the drawback? The farmer has to be very aware as to make sure that the cycle stays the same every day. This means that if one is to choose a dark period of 7 p.m. to 7 a.m., then the plant has to be blacked out everyday 7 p.m. and opened at 7 a.m. everyday. It is the same as an indoor growing environment; when it’s night time, its night time. What you put into it is what you will get out of it. As well one needs to make sure that there are no ‘light leaks’ in this artificially induced dark room. Lumen meters show that what the human eye sees is not necessarily what the plant sees. Zero lumens, what a plant generally considers very dark, can be achieved while still being able to see things with the human eye. As a matter of fact, the industry standard for blacking out a crop still allows an individual to be able to read a newspaper in! Some of the hardships light dep deals with as well is trying to keep the heat and humidity levels in check in the dark phase so as to not make the plant stretch, mold or get mildews and other diseases due to these levels getting out of check. Again, it is similar to an indoor growing environment. Sometimes you will need to add exhaust fans or circulation fans to create air movement when the blackout is closed. A good technique is to choose a flowering time that allows you to close the blackout just as it is getting dark and then an hour after it is good and dark retract the blackout. In the morning close the blackout an hour before it gets light out. This allows the plants to be in fresh air the majority of the night and decreases the amount of time that they are closed in a space. When a grower is choosing a design one should consider a company that automates their systems under greenhouse material or creating a manual system themselves that is covered by an outer layer of greenhouse material. The reason I mention this is that there is nothing like trying to manipulate a long cumbersome piece of plastic that is soaking wet from the rain and keeping it from not snagging and ripping and the like. Some companies offer automated systems to make sure that the timing stays constant. Controlling the hours of the blackout system allows one to take advantage of this method of allowing fresh air all night to the plants while not tying the grower to the needs of the plants an extra four times everyday.
Breathable, to cut down on high heat and humidity levels and non breathable blackout fabrics are available by some companies as well. When choosing a blackout material keep in mind the choice of longevity. There are cheap pieces of black plastic that hardware stores sell that can do the trick. But consider that they will trap in all of your humidity and heat and at the end of the season you have a big piece of plastic to throw away. There are materials available on the market that create a superior growing environment and have the benefit of lasting multiple seasons. They are usually more of an investment but successful businesses make investments. The idea is that although your lighting is now free from the sun you are still trying to create the ideal ‘indoor’ growing environment, affording the grower the best of both worlds; the efficiency and quantity of outdoor growing and the control, consistency and quality of indoor growing."
"A current flowering technique becoming more common amongst growers is called light deprivation, also known as ‘blacking out,’ ‘light-dep’ and inducing photoperiod. To ‘light-dep’ a plant is to shorten the duration of its sun’s light cycle so as to encourage the plant to flower in a time of year that wouldn’t naturally trigger plants to flower outdoors.
For instance, by reducing the summer sun to only 12 hours of light, it would trigger the plant to recognize that the end of it’s life cycle is close and, therefore, begin the flowering/seed production phase of it’s life.
Obviously this method of farming is only beneficial for plants whose flowering cycle is determined by the amount of hours it gets of light and the number of hours it gets to rest and process its food. This technique affords the farmer several benefits. In environments that have a short growing season due to early/late frosts, light deprivation allows an outdoor crop to start flowering earlier than ‘full season’ plants, therefore, allowing for an earlier harvest and eliminating the detrimental effects of cold and frost to the crop. Multiple crops can be grown each year outdoors in the same amount of space that one crop would be grown in. The third and fourth cycles seem to have considerably less quantity of flower mass produced than the first two due to the decreasing potency of the autumn/winter sun. This method also gives the grower the ability to implement supplemental lighting within this new growing environment, allowing them the ability to extend their daylight hours when there is less than 12 hours of sunlight. This can be used to add some extra flowering hours or add even more hours of light to simulate the summer vegetative sun cycle. Some light deprivation supply companies offer lumen meters that automatically turn on your supplemental lighting when light levels go to low sun to foggy mornings, cloudy/rainy days and/or timer systems to control the lighting cycle. Overall, light deprivation gives you the best choice for low energy consumption growing using the free power of the sun while allowing for multiple high yield, high quality crops.
These days growing has a lot to do not only with quality and variety but the time of the season in which you can market your products. There’s nothing like having a bumper crop of tomatoes at the same time every other farmer just harvested their crop. Instead, by using the control that light deprivation offers to the farmer you can have a high quality crop available when everyone else’s flower sites are just starting to develop and/or your second crop harvested when all the long season growers are just starting to get prepared for the harvest season.
This all sounds great, so what's the drawback? The farmer has to be very aware as to make sure that the cycle stays the same every day. This means that if one is to choose a dark period of 7 p.m. to 7 a.m., then the plant has to be blacked out everyday 7 p.m. and opened at 7 a.m. everyday. It is the same as an indoor growing environment; when it’s night time, its night time. What you put into it is what you will get out of it. As well one needs to make sure that there are no ‘light leaks’ in this artificially induced dark room. Lumen meters show that what the human eye sees is not necessarily what the plant sees. Zero lumens, what a plant generally considers very dark, can be achieved while still being able to see things with the human eye. As a matter of fact, the industry standard for blacking out a crop still allows an individual to be able to read a newspaper in! Some of the hardships light dep deals with as well is trying to keep the heat and humidity levels in check in the dark phase so as to not make the plant stretch, mold or get mildews and other diseases due to these levels getting out of check. Again, it is similar to an indoor growing environment. Sometimes you will need to add exhaust fans or circulation fans to create air movement when the blackout is closed. A good technique is to choose a flowering time that allows you to close the blackout just as it is getting dark and then an hour after it is good and dark retract the blackout. In the morning close the blackout an hour before it gets light out. This allows the plants to be in fresh air the majority of the night and decreases the amount of time that they are closed in a space. When a grower is choosing a design one should consider a company that automates their systems under greenhouse material or creating a manual system themselves that is covered by an outer layer of greenhouse material. The reason I mention this is that there is nothing like trying to manipulate a long cumbersome piece of plastic that is soaking wet from the rain and keeping it from not snagging and ripping and the like. Some companies offer automated systems to make sure that the timing stays constant. Controlling the hours of the blackout system allows one to take advantage of this method of allowing fresh air all night to the plants while not tying the grower to the needs of the plants an extra four times everyday.
Breathable, to cut down on high heat and humidity levels and non breathable blackout fabrics are available by some companies as well. When choosing a blackout material keep in mind the choice of longevity. There are cheap pieces of black plastic that hardware stores sell that can do the trick. But consider that they will trap in all of your humidity and heat and at the end of the season you have a big piece of plastic to throw away. There are materials available on the market that create a superior growing environment and have the benefit of lasting multiple seasons. They are usually more of an investment but successful businesses make investments. The idea is that although your lighting is now free from the sun you are still trying to create the ideal ‘indoor’ growing environment, affording the grower the best of both worlds; the efficiency and quantity of outdoor growing and the control, consistency and quality of indoor growing."
stelthy
Well-Known Member
I partly agree with this, however i would still try and keep light to a minimal, the plant is a weed and weeds grow quite easily, however if you want a nice healthy plant where all its energy will be foccused on flowering a crack of light could stress it or worse still stunt its growth, you could fix this by having a green light bulb in a lamp next to the part were the light is getting in set on a timer to go on and off when your main grow light are on/off, plants cant recognise green light, thats why they are used for night gardening
so if your green light is filtering in the light gap more so than the other leakage .. chances are your plants will pull through just fine hope this helps, or you could use draft strips to seal your setups doors/windows,... post some pics and ill be able to sort this prob for you - STELTHY 
anywhere311
Well-Known Member
how about red flourscent?
stelthy
Well-Known Member
I gotta ask, why have you got red fluro's on for lol, you grow at an amusement arcade depending on the intencity of the red fluros, you should be able to up the wattage of the green bulb, but if the red is to bright the i'd personaly spend time light proofing the grow room propperly what method of growing are you in,.. soil? hydro etc...? and you using a room or a cupboard or a tent?
depending on the intencity of the red fluros, you should be able to up the wattage of the green bulb, but if the red is to bright the i'd personaly spend time light proofing the grow room propperly what method of growing are you in,.. soil? hydro etc...? and you using a room or a cupboard or a tent?
anywhere311
Well-Known Member
im using organic soil..2 5.5k 27watt 1 6.5k 24watt..eventually going 2 get 3 42watters...18/6cycle..my problem is my leaves are turning yellow and top leaves r drooping and almost wrinkleing
mush19
Member
No mate green light same colour as the plants or try and block light leaks.
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