Minus
Well-Known Member
Looking great man.I love those led's.They seem to love em too!
Found my phototron in storage!
- Thread starter braundc420
- Start date
crossjoint
New Member
Yea Braundc420 your plants look like they love those LED's!! +rep with the fans and power supply. I used to have a phototron, but it wasnt quite as big as yours, I could only use it till bout half way through flowering. Keep up the good work bro.
Lookin good. Have you gone 12/12 yet? Looks like you are about 45 % filled. The early flowering stretch may surprise you so you may want to do so soon.
Crudvapors
New Member
Fucking itouch, hit backspace and it locked and proceeded to erase my entire post,so I will be shorter this time. I wanna grow with grow panel45 and 8 cfl 27w, so ur grow excites me. Mention of how far to keep led, too close and the viewing angle of led will fuck you. But 120degrees is a lot, I'd say 8" from top, but I also don"t know your grow area. If I assume 120 viewing angle, 8" from plant, UFO projects light 13.856"out from it"a most outer led, so u figure 2' circle around the UFO is it's grow space at 8" away. Then of course your awesome little grow thing is circualar and all the light that hits the side starts to bounce down and nwards. The math I used there was tan60*8=x when tan(x)=o/a, if u remember ur trig
. I'm no genius, but that mathmakes sinceto me. But u do want the led as close as possible IMO without loosing light dispersment. Led tech with pot is all new though, so who knows, best of luck, ima be watching to gauge my future grow off urs, so u better yield big
. I'm no genius, but that mathmakes sinceto me. But u do want the led as close as possible IMO without loosing light dispersment. Led tech with pot is all new though, so who knows, best of luck, ima be watching to gauge my future grow off urs, so u better yield big- Thread starter
- #25
braundc420
New Member
Thanks minus! It seems to be the cats meow in this particular grow pod. Hard to believe that erkle in the back is one plant.
Thanks crossjoint I think this is the smallest tron out there of the two sizes, unless i'm wrong. Ill probably go 12/12 in a week or so at 33% capacity, unless the green guru's here insist otherwise.
Thanks Munki, thinking in about a week or so when i'm at 33% full. If it outgrows thre tron, I might just open the sides and put it in the tent.
Fucking itouch, hit backspace and it locked and proceeded to erase my entire post,so I will be shorter this time. I wanna grow with grow panel45 and 8 cfl 27w, so ur grow excites me. Mention of how far to keep led, too close and the viewing angle of led will fuck you. But 120degrees is a lot, I'd say 8" from top, but I also don"t know your grow area. If I assume 120 viewing angle, 8" from plant, UFO projects light 13.856"out from it"a most outer led, so u figure 2' circle around the UFO is it's grow space at 8" away. Then of course your awesome little grow thing is circualar and all the light that hits the side starts to bounce down and nwards. The math I used there was tan60*8=x when tan(x)=o/a, if u remember ur trig
Hi crudvapors, and welcome to the forums,
particulary my journal! 
to answer your question(s) above, ummm. what? Not sure on all the science, but it sure seems to be working for this ol' bean grower.
my LED's are about 8" from the tops, but could probably be alot closer if I wanted. I'll take some pics with a pop can in it this weekend, so you can judge the size.
Crudvapors
New Member
Damn Itouch keeps screwing me up, when I'm not drunk and ony computer I'll tryand explain better. Wasn't asking question justn my thoguhtsd on Led light placement. Btw, itouch spell check is fucked.
crossjoint
New Member
Thanks crossjoint I think this is the smallest tron out there of the two sizes, unless i'm wrong. Ill probably go 12/12 in a week or so at 33% capacity, unless the green guru's here insist otherwise.
Yea, it might just be your pictures, makes it look bigger than it actually is. Ill be keeping in on this journal.
Crudvapors
New Member
ok, viewing angle is when the luminious intensity is half that of direct view. meaning, if you had 100lumens at 0degrees (direct on), and the viewing angle is 120degrees (which i looked up is for the UFO), than 60 degrees out (120/2=60) in left and right direction you get 120 degrees. then 60degrees out from the LED is half the luminous intensity of 0degrees, you get 50 lumens 60degrees out from the led. and when you got tangent(x)=o/a when x equals the viewing angle halfed and o=radius out from light and a=distance from the led, you get tangent(60)=o/8" when 120 is the viewing angle(halfed is 60), the led is 8" away, and o is the radius that the led lights up (otherwise know has HALF the area which the light hits). RADIUS IS HALF. now you solve for "o," which simple algebra says tangent(60) x 8 = o which is 13.856". Now, since that is half the viewing angle, cause 60 is half 120, or RADIUS IS HALF of diameter, the grow space is actually 27.7". The reason for dividing this in half is cause you have to deal with right angles when solving problems with tangent, sins or cosins.
What this means to you: if you go down directly 8" from an led on your led ufo, then 13.856" out from that led (i'm going to say 1' from here on cause you are better off being inside the maximum dimensions), you are at 50% the luminous intensity of direct viewing angle, meaning, if you are at 100lumens 8" directly underneath the LED, then 1' out in any direction from 8"underneath the LED you are at 50 lumens. So now you figure from your outer most LED in the UFO you get 1' out till your luminous intensity starts exponetialy decreasing, you get about 1' in each direction out from UFO meaning about 1' radius+ however long the radius of the LED is, so thats a grow space of 2' plus the diameter of the LED UFO. (radius is half the diameter, so 1' radius is 2' diameter + you gotta figure in the 10.6" diameter of the ufo, so thats 2'10" of grow space 8" away from the center of the UFO). Since the UFO has red on the outside, then blue, then red, that means, 1' out from the outter most led(which is red) is actually getting less than 50% of the inner blue light, thus, leaves outside 1' of the UFO are getting shorted blue light.
You can still see light ouside the viewing angle, this is called the reading angle, but light outside here is less the 50% initial lumens and decreases exponetially. So you want to keep your grow space less than the viewing angle, which for the UFO at 8" away is 2'10", and at 24" from led you get 7.9square feet of grow space (not 12feet like some douche bags like to offer) if you want to stay within 50% of initial lumens (not to mention light weakens with distance). Also, UFO's are circular, which is bad ass for your grow since your grow space is a circle, but douchebags offering square feet with circular LED's are retarded. They need to talk in terms of diameter or radius unless they are like the glowpanels which ARE squares (still not perfect square feet cause LEDs are ALWAYS circulars, but being placed in square arrangment makes the math close enough, you just have rounded edges).
Heres an article on a 70degree viewing angle LED that says what i just said minus the math. They will use 35 degrees cause you have to half the viewing angle to make a right triangle to use trig (70/2=35).
https://www.grandwell.com/viewing_angle_brightness.php
The optimal brightness is the viewing angle, everything outside is the reading angle (which is crap IMO).
I have no idea if this makes since outside my mathmatically driven world, if you give me exact dimensions of your grow space, i can give you math corresponding to you specifically. I figure your grow space isn't bigger than 2'10" so i'm saying 8" away from plants is perfect. 6" away means about 2'5" grow space. both of those measurements arn't MAXIMUMS, but instead inside the maximum cause you gotta figure youi want red and blue light hitting all leaves, so you always want to be inside the viewing angle cause the blue LEDs are closer in than the reds.
Have fun with this post
What this means to you: if you go down directly 8" from an led on your led ufo, then 13.856" out from that led (i'm going to say 1' from here on cause you are better off being inside the maximum dimensions), you are at 50% the luminous intensity of direct viewing angle, meaning, if you are at 100lumens 8" directly underneath the LED, then 1' out in any direction from 8"underneath the LED you are at 50 lumens. So now you figure from your outer most LED in the UFO you get 1' out till your luminous intensity starts exponetialy decreasing, you get about 1' in each direction out from UFO meaning about 1' radius+ however long the radius of the LED is, so thats a grow space of 2' plus the diameter of the LED UFO. (radius is half the diameter, so 1' radius is 2' diameter + you gotta figure in the 10.6" diameter of the ufo, so thats 2'10" of grow space 8" away from the center of the UFO). Since the UFO has red on the outside, then blue, then red, that means, 1' out from the outter most led(which is red) is actually getting less than 50% of the inner blue light, thus, leaves outside 1' of the UFO are getting shorted blue light.
You can still see light ouside the viewing angle, this is called the reading angle, but light outside here is less the 50% initial lumens and decreases exponetially. So you want to keep your grow space less than the viewing angle, which for the UFO at 8" away is 2'10", and at 24" from led you get 7.9square feet of grow space (not 12feet like some douche bags like to offer) if you want to stay within 50% of initial lumens (not to mention light weakens with distance). Also, UFO's are circular, which is bad ass for your grow since your grow space is a circle, but douchebags offering square feet with circular LED's are retarded. They need to talk in terms of diameter or radius unless they are like the glowpanels which ARE squares (still not perfect square feet cause LEDs are ALWAYS circulars, but being placed in square arrangment makes the math close enough, you just have rounded edges).
Heres an article on a 70degree viewing angle LED that says what i just said minus the math. They will use 35 degrees cause you have to half the viewing angle to make a right triangle to use trig (70/2=35).
https://www.grandwell.com/viewing_angle_brightness.php
The optimal brightness is the viewing angle, everything outside is the reading angle (which is crap IMO).
I have no idea if this makes since outside my mathmatically driven world, if you give me exact dimensions of your grow space, i can give you math corresponding to you specifically. I figure your grow space isn't bigger than 2'10" so i'm saying 8" away from plants is perfect. 6" away means about 2'5" grow space. both of those measurements arn't MAXIMUMS, but instead inside the maximum cause you gotta figure youi want red and blue light hitting all leaves, so you always want to be inside the viewing angle cause the blue LEDs are closer in than the reds.
Have fun with this post
Crudvapors
New Member
lol, I tried to be as clear as I could concidering the material. I just repeated things a lot to try and clarify. I'm not a specialist in led tech, i'm certain the math is correct as longas the theory is. Whenever I get my glowpanel I want to get a lux meter and run tests. I don't get why technical specs of led panels don't just show lumens relative to certain positions under the light. Thats what we all care about. I certainly don't care if it's 1w or 5w, Or if it's Chinese or something, I want to know lumens at distances and how far out I get those lumens.
- Thread starter
- #31
braundc420
New Member
ok, viewing angle is when the luminious intensity is half that of direct view. meaning, if you had 100lumens at 0degrees (direct on), and the viewing angle is 120degrees (which i looked up is for the UFO), than 60 degrees out (120/2=60) in left and right direction you get 120 degrees. then 60degrees out from the LED is half the luminous intensity of 0degrees, you get 50 lumens 60degrees out from the led. and when you got tangent(x)=o/a when x equals the viewing angle halfed and o=radius out from light and a=distance from the led, you get tangent(60)=o/8" when 120 is the viewing angle(halfed is 60), the led is 8" away, and o is the radius that the led lights up (otherwise know has HALF the area which the light hits). RADIUS IS HALF. now you solve for "o," which simple algebra says tangent(60) x 8 = o which is 13.856". Now, since that is half the viewing angle, cause 60 is half 120, or RADIUS IS HALF of diameter, the grow space is actually 27.7". The reason for dividing this in half is cause you have to deal with right angles when solving problems with tangent, sins or cosins.
What this means to you: if you go down directly 8" from an led on your led ufo, then 13.856" out from that led (i'm going to say 1' from here on cause you are better off being inside the maximum dimensions), you are at 50% the luminous intensity of direct viewing angle, meaning, if you are at 100lumens 8" directly underneath the LED, then 1' out in any direction from 8"underneath the LED you are at 50 lumens. So now you figure from your outer most LED in the UFO you get 1' out till your luminous intensity starts exponetialy decreasing, you get about 1' in each direction out from UFO meaning about 1' radius+ however long the radius of the LED is, so thats a grow space of 2' plus the diameter of the LED UFO. (radius is half the diameter, so 1' radius is 2' diameter + you gotta figure in the 10.6" diameter of the ufo, so thats 2'10" of grow space 8" away from the center of the UFO). Since the UFO has red on the outside, then blue, then red, that means, 1' out from the outter most led(which is red) is actually getting less than 50% of the inner blue light, thus, leaves outside 1' of the UFO are getting shorted blue light.
You can still see light ouside the viewing angle, this is called the reading angle, but light outside here is less the 50% initial lumens and decreases exponetially. So you want to keep your grow space less than the viewing angle, which for the UFO at 8" away is 2'10", and at 24" from led you get 7.9square feet of grow space (not 12feet like some douche bags like to offer) if you want to stay within 50% of initial lumens (not to mention light weakens with distance). Also, UFO's are circular, which is bad ass for your grow since your grow space is a circle, but douchebags offering square feet with circular LED's are retarded. They need to talk in terms of diameter or radius unless they are like the glowpanels which ARE squares (still not perfect square feet cause LEDs are ALWAYS circulars, but being placed in square arrangment makes the math close enough, you just have rounded edges).
Heres an article on a 70degree viewing angle LED that says what i just said minus the math. They will use 35 degrees cause you have to half the viewing angle to make a right triangle to use trig (70/2=35).
The optimal brightness is the viewing angle, everything outside is the reading angle (which is crap IMO).
I have no idea if this makes since outside my mathmatically driven world, if you give me exact dimensions of your grow space, i can give you math corresponding to you specifically. I figure your grow space isn't bigger than 2'10" so i'm saying 8" away from plants is perfect. 6" away means about 2'5" grow space. both of those measurements arn't MAXIMUMS, but instead inside the maximum cause you gotta figure youi want red and blue light hitting all leaves, so you always want to be inside the viewing angle cause the blue LEDs are closer in than the reds.
Have fun with this post
lol... ok. thanks for that! Soooo the led ufo is 8 inches from the tops, that seem right?
Thanks for following fellas! heres an update after a few more days. Almost 12/12 time here.
they have almost jumped to the 33% capacity mark after the past few days.
Thanks for looking!
WeedyMcWeedWeed
Well-Known Member
what are the sticks for?
- Thread starter
- #33
braundc420
New Member
believe it or not, that erkle in the back is just one bush. I put the sticks in to spread the tops out of the middle, and off to the sides, to expose the inner tops. Also, if you notice, the sticks form little triangle spaces in front of each U bulb, so I am trying to train the plants to stay out of those particular triangles to avoid burns and light blockage. thanks for asking!
BTW, never mentioned my nutrients, i'm using Harvest Moon's organic feed schedule...
WeedyMcWeedWeed
Well-Known Member
i thought it was to keep off the lights. which i have to say the u tubes will not burn the plant. my wont anyways. but nice on spreading yours out. i had to many in my tron, but i only have one now, and had i started with one, all the colas would be way nicer.
- Thread starter
- #35
braundc420
New Member
my U tubes tend to burn the tips that touch them. It takes a day or two to happen, and it's not much damage, just annoying to look at. I also heard somewhere to trim certain leaves that hog up the vertical lighting, so I figured if I kept the bulb areas as clear as possible, it might help. Yeah right... too bushy as it is...
Next time around, I will either go two or one plant. This variety business was the patients idea. She insisted on 3 to 5, so I just convinced her the fewer the better. Thanks for the input, I appreciate it more than you may think Sir.
Loving your cylinder of goodness!
ss
ss
WeedyMcWeedWeed
Well-Known Member
definitely 1 plant per phototron
- Thread starter
- #38
braundc420
New Member
Agreed! I'd switch now myself.That led is wicked looking.Everything is looking great man,love the setup! +reps indeed.
+reps for the advice I should have taken...
Anyway, after adding the second row of bamboo at the 50% capacity mark, I noticed some of the tops were dern near that point already and switched to 12/12 that night (aug. 22nd.) It's been about 4 or 5 days now, and I really wish I had cleaned the resin outa my ears when SS and munki were talking about that "early flowering stretch" stuff...indeed it did...
The internet is great for gathering advice from experts like yourselves, it's taking the advice without someone physically here to kick me in the sack when I slack... ...that, I still have to master.
Thank you Sir! Heres a few more at almost half full...
heres one of the unfinished stand made from cedar and an old computer chair base w/gas shock. It will house the 12v fan power supply/thermometer unit, and rotate.
this one is of a low profile hanger I constructed out of an old candle holder the wife left in the garage too long. By using this, I can get the UFO led up into the canopy/hood of the tron (critical height/space i'm gonna need) during the flowering.
a few taken today...
any advice on keeping these things short, without killing my yield, is greatly appreciated. I know, i know, its a phototron... Thanks for looking!
BUD08
New Member
First off i must say this is one of the coolest ways to set up a tron. It seems like alot more people are taking them out again +rep
About keeping them short they should be close to done growing from the looks of it and the LED's can be right ontop of them before you will even start to have any issues. If you want shorter plants they need to be topped so that they will grow more like a bush then a tree.
About keeping them short they should be close to done growing from the looks of it and the LED's can be right ontop of them before you will even start to have any issues. If you want shorter plants they need to be topped so that they will grow more like a bush then a tree.
I had the exact same height problem with my greenhouse grow and tying and bending my plants down worked very well.
The problem with that in the tron is that you don't have much lateral space to bush them out a lot.
Topping them would be another option for controlling their height before flowering begins.
I was just reminded in another thread about Humboldt's "Bushmaster" that is very effective at stopping vertical growth. It's definitely not a very "organic" solution, but it seems to work well.
The problem with that in the tron is that you don't have much lateral space to bush them out a lot.
Topping them would be another option for controlling their height before flowering begins.
I was just reminded in another thread about Humboldt's "Bushmaster" that is very effective at stopping vertical growth. It's definitely not a very "organic" solution, but it seems to work well.
