Things to Know About Lighting

Can i use a sylvania octron xp 14w 6500k for growing my plants? I want to grow 3 clones.....would they be good enough to grow from seedling to budding? Please let me know
 
What do you want to know, you need the red light to have the plants make thc in flowering state, so HPS have that red light wave, that why they look orange, but you don't need them when it come to just growing them, so turn that energy into energy the plant can use to grow, then a floresent will do just fine, if you worried about cops seeing your electric bill, but not worried of the price of LED that is way to go, they also will last at least 10 years that if they are on all the time more like 20-30 years they make no heat either to burn your house down when your at home. Although some people say LEDs are not perfect yet and HPS and MH is still the way to go.
 
buy a book at barns the marijuan bible shows how far away how much luminous what wattage, and a lot of other stuff that will make you a better grower. i think the book is around 18 dollars.
 

CantGetWrite

New Member
ALSO NOTE: This thread was started 7 yrs ago people. It's a sticky cause there is good information in it. Look at the date something was posted before responding to a comment from someone that may not even be a member anymore.
 

CantGetWrite

New Member
Can i use a sylvania octron xp 14w 6500k for growing my plants? I want to grow 3 clones.....would they be good enough to grow from seedling to budding? Please let me know
Your going to need more wattage than that for good growth. I suggest 60-80w of CFL for only plant and 20-40w for each additional. CFL's lights do not penetrate the canopy as well as HID systems (MH/HPS). If you use multiple low wattage you can box in the plant(s) providing a well distributed light source.

That bulb may be decent for propagation, but most prop bulbs are 24w(2ft) or 48w(4ft).
 

TryN

Well-Known Member
ALSO NOTE: This thread was started 7 yrs ago people. It's a sticky cause there is good information in it. Look at the date something was posted before responding to a comment from someone that may not even be a member anymore.
Very old but very good thread!
 

AlphaPhase

Well-Known Member
There's many pages in this thread so forgive me if I missed the answer to this question.

I've been growing indoor for a while. But this question has always baffled me.
This pertains to a 1000w hps

Most people say get the light as close as possible without burning the plant. OK, that's a good answer. But I can usually get the light within 6" without it feeling hot on my hand. Mind you it's air cooled yadda yadda.

So why is it that every single profession grow I've seen in person and in pictures the lights are about 30" away? What gives?

Is 2-3 feet per 1000w hps air-cooled optimum? For the most part, even if I can get my 1000w within 8" or so to the plant tops, i always hang it about 12" or above. I'm thinking that's still too close... I wanna know from the people that could go closer with thier lights but don't, and why. Because this simple question that is so basic has been baffling me when I see what other people are doing...
 

tyke1973

Well-Known Member
just for the shoot,also becuase of the amount of lights some use if your useing say 12 lights in a room you can have them further away,because of the light the plants will receive from other lights in the room.has well has the one over the plants.

A good rule of thumb is once the plants are around 4 weeks into flower higher them a bit this will give you a better ark of light,and far better spread of light to cover the plants better.a bit light a torch beam the further away from the torch the more area it covers but never more than 1 ft 1 1/2 ft after week 4.

hope this helps stay green peace
 

AlphaPhase

Well-Known Member
just for the shoot,also becuase of the amount of lights some use if your useing say 12 lights in a room you can have them further away,because of the light the plants will receive from other lights in the room.has well has the one over the plants.

A good rule of thumb is once the plants are around 4 weeks into flower higher them a bit this will give you a better ark of light,and far better spread of light to cover the plants better.a bit light a torch beam the further away from the torch the more area it covers but never more than 1 ft 1 1/2 ft after week 4.

hope this helps stay green peace
Thanks man ! That's exactly what I wanted to know, right on bud! Thanks again:bigjoint:
 

mike lanza

Active Member
here then is this true............What is Lumen output of these lamps ?
Though given, it is irrelevent ! Lumens are for Humans not plants ! Lumens measure how we see light. Our eyes prefer green light. Green light has the most Lumens, Red and Blue the least. Most fluorescent lamps are made to look bright for humans by adding huge spikes of greeny yellow light.
Lumens only measure how BRIGHT the light appears to us.
Lumens cannot measure light useful to plants - PUR

*What is the Kelvin colour temperature of these lamps ?
The Red and Blue lamps DO have a Kelvin colour specification, but the PURple™ does not.
The Kelvin color simply describes to which temperature a block of Carbon must be heated in order to match the apparent colour of the lamp.
It does not measure the Quantity OR Quality of the light for growing plants.
PURple™ does not appear in the Kelvin scale as it is a mix of TWO colours.

What is the CRI ?
CRI allows comparison between different lamps ability to render color, It measures how much the Red and Green and Blue reflected light, looks RIGHT to our eyes.
It does not measure the Quantity or Quality of light useful to plants - PUR
im growing indoors today wanted to know when i first plant the seed can i start out with low lighting first or do i need full power at all times ???
 

Rudi I&I Automan

Well-Known Member
Yup yup...I'm a general contractor...they are in fact all over large construction sites.

HOWEVER I HIGHLY DISCOURAGE STEALING FROM CONSTRUCTION SITES...IT'S DARK, THERE'S NO ONE AROUND...THEIVES THAT ARE CAUGHT ARE GENERALLY DEALT WITH SEVERLY WHEN CAUGHT IN DARK PLACES WITH NO WITNESSES.

BESIDES IT'S JUST FAWKING WRONG TO STEAL AND ALMOST AS WRONG TO CONDONE OR SUGGEST IT. BAD FORM MY FRIEND, BAD FORM!!!!!!

and on a more personal note...thanks, it's people like you that cost me hundreds of thousands of dollars a year replacing crap I find stolen, you know we can't work when you steal our stuff?!!?!?! Oh and those lights, that's called EGRESS LIGHTING, it's sole purpose is so we don't trip and kill ourselves at 5am when the fawking sun isn't even up yet. And when it's not in place OSHA comes and shuts down our job site because we are then in violation of federally mandated construction safety laws!!! Makes me sick when I have to be woken up by my Foreman because someone stole from our job site!!!!

YOU WANNA GROW POT FINE...DON'T STEAL FROM HARDWORKING PEOPLE TO DO IT!!!!!!!!!!!!!!

HERE HERE, My good man.
im not an owner, i do work in the Personal & Private Security sector too. so inbetween festies and personal security work, building site security is delt without the police usualy and with extreme prejudise by some of my fellow team.
there cheap as chips anyway, £40 for a 400 watt light, my bulbes used to cost 4 x that.
 

Rudi I&I Automan

Well-Known Member
well you can over do it and (ye gads and little fishes), burn them with the heat, but T5's or LED's look to have covered that and ceramic 35watt metal halide display lights, now they may need some space between the plant top and bulb. use the back of your hand to detect the heat of a bulb, or lips with led/cfl's, being able to position the lights so close getting weedlings to bush babies alike. in no time

the use of a sheet of heatproof plastic or glass will stop the heat from burning them when there young.
 
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PSUAGRO.

Well-Known Member
im growing indoors today wanted to know when i first plant the seed can i start out with low lighting first or do i need full power at all times ???
Full blast from the start for best results(think outdoors ;-)).......IF you can keep your temps in check and aren't concerned about the added electrical costs.

Good luck grower and be safe
 

TheBman24

Well-Known Member
question: new to this for my seedlings and clones i have 125 watt cfl was told because its 6500k i should be keeping that 4-6 feet away because mayharm the little guys if to close is this an accurate statment?
 

PSUAGRO.

Well-Known Member
question: new to this for my seedlings and clones i have 125 watt cfl was told because its 6500k i should be keeping that 4-6 feet away because mayharm the little guys if to close is this an accurate statment?
Way too far for a 125w cfl....12-16 inches is around where you want to be for seedlings. Always do a hand check to see if it may be too warm for your specific environment...

Good luck grower
 
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