Things to Know About Lighting
- Thread starter roosterfish
- Start date
powerplant
Active Member
we already done grown with HPS and HID lamps. but in canada. we moved to a new country and it seems like LED's are the way to go....
you see our grow room is located in a place where the laws are very different from Canada or the united states. here... its not worth risking it no matter what.
you have to agree that using 2200 watts for 12 hours a day will raise suspicions.
that brings up another question.
i was told by a friend that i should set up 4 to 6 car batteries to hook up to a ballast, to light up my growroom. is that even possible?https://www.rollitup.org/editpost.php?do=editpost&p=913097
you see our grow room is located in a place where the laws are very different from Canada or the united states. here... its not worth risking it no matter what.
you have to agree that using 2200 watts for 12 hours a day will raise suspicions.
that brings up another question.
i was told by a friend that i should set up 4 to 6 car batteries to hook up to a ballast, to light up my growroom. is that even possible?https://www.rollitup.org/editpost.php?do=editpost&p=913097
ganjagoddess
Well-Known Member
no Hids cannot run off of car batteries.
powerplant
Active Member
How many CFL's do you think would do the same thing as a 1000 watt HPS?
thanks man i was planning to put only 8
ganjagoddess
Well-Known Member
No amount
Depends on style, I can fit 100 plants under a 1000 watt, but we are talking different styles of growing.
powerplant
Active Member
what u mean no amount? what type of and how many of CFL's do i need to grow the same amount of bud that a 1000 watt HPS light would?
powerplant
Active Member
ARE 2 500W CFLs enough for 6 plants to produce good yield?
ganjagoddess
Well-Known Member
The intensity of the Red and Blue spectrums emmited by any size CFL will never equal a HPS light, and since intesities cannot combine the CFL will never equate in effectiveness of a HID light.
So in theory the answer is no
The answer to this is actually yes, CFL's have actually been shown (unlike Leds) to be able to produce viable Bud in decent quantity although no matter the size or quantity of cfls will not equal the equivelent wattage HPS light's yeild.
powerplant
Active Member
thank you. obviously HPS are good, i have a 600watt one but i cant use it because of its high energy cost. im only gonna use it for the last week of flowering before i give the plants total darkness.
ganjagoddess
Well-Known Member
You would be better off using it for weeks 4-7 if possible
Also if you were asking about using two 500watt cfls???
then whats the worry for high energy cost.
You can run a 600 watt light for less than $25 a month???
600 watt actually equals 680 watts. sooo
680 X 12hours a day = 8160 watts = 8.16kwh/day at .10 cents per KWH = $.82 or 82 cents a day
x 30 days a month = $24.00 extra on your bill a month...
Thats really not much.
Also if you were asking about using two 500watt cfls???
then whats the worry for high energy cost.
You can run a 600 watt light for less than $25 a month???
600 watt actually equals 680 watts. sooo
680 X 12hours a day = 8160 watts = 8.16kwh/day at .10 cents per KWH = $.82 or 82 cents a day
x 30 days a month = $24.00 extra on your bill a month...
Thats really not much.
Last edited:
ganjagoddess
Well-Known Member
congrats Bigwheel, you will not regret it.
If I may suggest a website try htgsupply.com
either of these two lights.
Digital 600 watt. $200.00USD
High Tech Garden Supply
Magnetic 1000 watt, $240.00
High Tech Garden Supply
If I may suggest a website try htgsupply.com
either of these two lights.
Digital 600 watt. $200.00USD
High Tech Garden Supply
Magnetic 1000 watt, $240.00
High Tech Garden Supply
powerplant
Active Member
thanks for that.
but another problem is the fact that having a 600 watt light working 12 hours a day for 30 days, in a single bedroom apartment building...
it says a 55 watt CFL (5000 K) is equal to having a 250 watt light bulb,
so maybe i can buy 5 of these instead?
55W GROW LIGHTS 5000K COMPACT FLUORESCENT LIGHT BULBS - eBay (item 300229426816 end time Jun-09-08 09:30:38 PDT)
but another problem is the fact that having a 600 watt light working 12 hours a day for 30 days, in a single bedroom apartment building...
it says a 55 watt CFL (5000 K) is equal to having a 250 watt light bulb,
so maybe i can buy 5 of these instead?
55W GROW LIGHTS 5000K COMPACT FLUORESCENT LIGHT BULBS - eBay (item 300229426816 end time Jun-09-08 09:30:38 PDT)
ganjagoddess
Well-Known Member
When they say that what they mean it is the equivelent to a 250 Incadesent Light bulb.
If you study the intensity of the red and blue spectrum of a HID you will find that although the HID r +B spectrums are only 10-20% of the actual light emmited the intensity of it far surpasses the intensity of any number of CFL, LEDS, or Flouros.
think of it like this.
a 1000 watt HPS outputs 150,000lumens directly 0" below the bulb
following the inverse square ratio of light law.
One foot below it is 75,000 lumens
and two feet below (recommended distance for a 1000 watter) 37,500 lumens
So you have 37,500 Lumens hitting the plant canopy of all the spectrums light.
So lets say that 10% of that light is Red and Blue, that means at that distance you have 3,750 lumens of JUST red and blue light, or at 20% 7500 lumens of R+B light.
If you do the calculations on CFL's which are allowed to pratically touch the plant
you start with (on the CFL you posted)
3600lumens
Now Cfls have at most 25% of thier spectrum emmitted R+B so
at 0 feet 25% of 3600lumens is 900lumens of R+B spectrum
So you are waging 900 R+B lumens vs. 3750-7500 lumens on a HID
and since Lights cannot combine into a bigger Intensity of light you cannot add another CFL to get to 1800 lumens of R+B.
Your entire CFL light fixture will be putting out a Max of 900 lumens as per this example.
Marijuana in its flowering phase Needs MAD MAX light, in fact If you calculate the R+B from the sun, a 1000 watt HID light doesnt even come close.
thats why Outdoor Indicas can be 6 feet tall and Produce as much as a 1 lb of bud, vs a indoor under a 1000 watter will not come close unless seriously vegged to twice the size of its outdoor counterparts.
If you study the intensity of the red and blue spectrum of a HID you will find that although the HID r +B spectrums are only 10-20% of the actual light emmited the intensity of it far surpasses the intensity of any number of CFL, LEDS, or Flouros.
think of it like this.
a 1000 watt HPS outputs 150,000lumens directly 0" below the bulb
following the inverse square ratio of light law.
One foot below it is 75,000 lumens
and two feet below (recommended distance for a 1000 watter) 37,500 lumens
So you have 37,500 Lumens hitting the plant canopy of all the spectrums light.
So lets say that 10% of that light is Red and Blue, that means at that distance you have 3,750 lumens of JUST red and blue light, or at 20% 7500 lumens of R+B light.
If you do the calculations on CFL's which are allowed to pratically touch the plant
you start with (on the CFL you posted)
3600lumens
Now Cfls have at most 25% of thier spectrum emmitted R+B so
at 0 feet 25% of 3600lumens is 900lumens of R+B spectrum
So you are waging 900 R+B lumens vs. 3750-7500 lumens on a HID
and since Lights cannot combine into a bigger Intensity of light you cannot add another CFL to get to 1800 lumens of R+B.
Your entire CFL light fixture will be putting out a Max of 900 lumens as per this example.
Marijuana in its flowering phase Needs MAD MAX light, in fact If you calculate the R+B from the sun, a 1000 watt HID light doesnt even come close.
thats why Outdoor Indicas can be 6 feet tall and Produce as much as a 1 lb of bud, vs a indoor under a 1000 watter will not come close unless seriously vegged to twice the size of its outdoor counterparts.
powerplant
Active Member
thats crazy.
so whats the best light i can use that doesnt use as much electricity to run?
so whats the best light i can use that doesnt use as much electricity to run?
ganjagoddess
Well-Known Member
Truly a 400 hps light from htgsupply.com its only 109 bucks and will only cost you $15 a month extra on your bill!!!
So, my friend do u mean if i would use a rail i could fit around 60 plants??? or u use a different style of growing??