payn4school
Member
Nice work bro! just pullin up a seat..
-
ICMag with help from Landrace Warden and The Vault is running a NEW contest in November! You can check it here. Prizes are seeds & forum premium access. Come join in!
Led Vs. Hps - 70w Challenge
- Thread starter Medved
- Start date
G
Guest
The LED ones are looking nicer than i expected, looking forward to seeing the end results.
GroovySituation
Member
very surprising to see how the LEDs are working....
i will follow you grow , but it seems you will have a quite good result with the LEDs...
all the best . GS
i will follow you grow , but it seems you will have a quite good result with the LEDs...
all the best . GS
G
Guest
This looks fantastic... Just went trough the entire thread, and the progrss is amazing. To be honest, I doubted that LED's could do it... but then again, these are not the LEDs that I'm used to (The leds I usually use for my "electrical expriments" like soldiering stuff and you know 
are about 3-4$ for 100 pieces...
I am thinking about making a box for growing small amounts, like just one of these two shelves, but defenetely not this year... I still need much more expirience, right now I am doing my first grow on sunlight.. and results so far are not that great... Hope at least I get e decent smoke at the end...
After a couple of grows, packed witch much more expirience, I will defenetely try indoor growing.
But this LED setup seems just the perfect thing for my future growbox... I was thinking about fluorescent at first, Since it has to be compact and energy efficient.
Anyways, congratulations for all the work. Experiments like these make the life of many people easier
And just out of curiosity. What do you think about OLED arrays, I know they're epensive right now, but would they theoretically give the needed spectrums? Cause their price is expected to drop in the following years.
are about 3-4$ for 100 pieces... I am thinking about making a box for growing small amounts, like just one of these two shelves, but defenetely not this year... I still need much more expirience, right now I am doing my first grow on sunlight.. and results so far are not that great... Hope at least I get e decent smoke at the end...
After a couple of grows, packed witch much more expirience, I will defenetely try indoor growing.
But this LED setup seems just the perfect thing for my future growbox... I was thinking about fluorescent at first, Since it has to be compact and energy efficient.
Anyways, congratulations for all the work. Experiments like these make the life of many people easier
And just out of curiosity. What do you think about OLED arrays, I know they're epensive right now, but would they theoretically give the needed spectrums? Cause their price is expected to drop in the following years.
Last edited:
G
Guest
Well, nice work med, I merit your work in the name of science. No work that is published is wasted, it is all good. I do not think I will be using LEDs anytime soon, but it is in my horizon. Price and availability is part of the equation. I will continue to waste energy in the form of heat for the time being. It is interesting that someday a solar panel and battery can assist the indoor grower using LEDs.
Medved
Member
200 post in this thread o yeah
well we have some heat overhere for about 10 days everyday over 30°C and more than 7 days over 35°C. So I think the heat is not very good for my plants. The temperature goes over 30°C in the LED Box. And I find some LED burns. Is that possible? Here is the pic of problematic leave.
Here is another pic of the whole LED room
and another from the side
Here is a pic of HPS room from top
And another from the side
The girls are now in 31 days of flowering and smelling nice
Have a nice hot summer day
o yeah well we have some heat overhere
for about 10 days everyday over 30°C and more than 7 days over 35°C. So I think the heat is not very good for my plants. The temperature goes over 30°C in the LED Box. And I find some LED burns. Is that possible? Here is the pic of problematic leave.
Here is another pic of the whole LED room
and another from the side
Here is a pic of HPS room from top
And another from the side
The girls are now in 31 days of flowering and smelling nice
Have a nice hot summer day
maxe
Member
Hi there...very interesting experiment.
Are there more red than blue LEDs because you try to match the HPS spectrum and make the experiment more "fair" that way? Wouldn't it otherwise be better with the reverse ratio of red/blue LEDs (most blues) for vegging?
anyway good luck with it =)
edit: oh btw another question.. shouldn't the LEDs have been like 25w?..aren't they supposed to be more efficient per watt than HIDs?
Are there more red than blue LEDs because you try to match the HPS spectrum and make the experiment more "fair" that way? Wouldn't it otherwise be better with the reverse ratio of red/blue LEDs (most blues) for vegging?
anyway good luck with it =)
edit: oh btw another question.. shouldn't the LEDs have been like 25w?..aren't they supposed to be more efficient per watt than HIDs?
Last edited:
I've gone through this thread a few times. It's awesome. I've been searching for info on LEDs like this for about a year. Finally something worth reading.
I'm just curious about the specs. Like where did you buy the LEDs, how many did you use, what kind of brand, etcetera.
I'll probably be building a LED grow setup in a few months. I want to start jumping on it now (ordering parts and whatnot). The more information I can get, the better.
Thanks a lot man.
Keep up the great work.
(I registered on this forum just so I could reply to this post and now I think I'll be sticking around.)
I'm just curious about the specs. Like where did you buy the LEDs, how many did you use, what kind of brand, etcetera.
I'll probably be building a LED grow setup in a few months. I want to start jumping on it now (ordering parts and whatnot). The more information I can get, the better.
Thanks a lot man.
Keep up the great work.
(I registered on this forum just so I could reply to this post and now I think I'll be sticking around.)
S
stonedeconomist
yeshwa said:
if your looking for a LOT of info about growing with led's you should read david zap's threads over at uk 420 if you havn't already read them.
http://www.uk420.com/boards/index.php?showtopic=69950&hl=
http://www.uk420.com/boards/index.php?showtopic=75818&hl=
http://www.uk420.com/boards/index.php?showtopic=86168&hl=
Medved
Member
Helou everybody, today is 38 days of flowering, and not everything is going OK :S I just caime from vacations from sea. And the girls was about 7 days without me, I told my friend that he needs only to water them if they were all dry up. But he didn't listen me, and watered 2 times between that It looks like I have a major PH problem in my LED room. PH water from the tray was around 5.5 Any suggestions what is the best thing to do now? I made a mixure of water and fertilizers for my friend to water. But there was PH always over 6.5. I always watered them with water around 6.5 so I don't know why the PH in the tray is around 5.50 Never happend this before. And in the HPS room, everything is looking OK, girls are nice and good looking. The both places are watered with the same water, the same PH. Everything is the same :S only lamp is different So if you can help me I would be very grateful.
Here are the pics
LED room with problem
Have a nice day
It looks like I have a major PH problem in my LED room. PH water from the tray was around 5.5 Any suggestions what is the best thing to do now? I made a mixure of water and fertilizers for my friend to water. But there was PH always over 6.5. I always watered them with water around 6.5 so I don't know why the PH in the tray is around 5.50 Never happend this before. And in the HPS room, everything is looking OK, girls are nice and good looking. The both places are watered with the same water, the same PH. Everything is the same :S only lamp is different So if you can help me I would be very grateful. Here are the pics
LED room with problem
Have a nice day
G
Guest
looks like overfert in the led room, are you feeding both rooms the same mixture of nutrients at the same ratios?
G
Guest
it looks like since the led room is behind it is getting overferted because the plants just dont need as much as the hps room, wouldnt you agree?
budvapor
Member
rkrone said:
makes sense to me.
the ph doesn't sound too bad. i didn't go back through the thread to find out what the medium is, but i believe with soil the run-off is usually around that. 5.5 is on the low end but not out of the range for this plant anyway according to what i've read...
how are the temps? how's the humidity? i remember your LED chamber is above the HPS chamber? that means the HPS temp may rise to the LED chamber, including the pots and medium. don't just check the canopy level, check the medium too... roots are not as tolerant of heat as the rest. should probably be better the other way around!
i hope they recover! good luck!
rkrone said:
that sounds about right
G
Guest
then essentially this experiment has proven already that hps does muuuuch better...the led plants can even handle the feeding regimen any longer
LED_experiments
Member
at uk420 we had a debate (a while ago) about nutrient concentration in the water you are using when growing under leds. the idea was that plants under leds use less water because the temperature should be lower in that box. for that reason the EC of the solution should be higher than the hps. in this case the temps in the led box are higher, but is the water usage the same/higher/lower? not sure about that, but i suspect led plants use less water. maybe medved has the answer. if i'm right there is no way that this problems were the consequence of overdose.
i seriously doubt that overdose may be the reason for those problems. there are so many differences between growing under hps and growing under leds that have NOT been considered
. therefore this grow has a very high potential to fail and it looks like it will. i guess most of you don't even know what i'm talking about. i'm not judging you for that. it's not your fault that you are not interested in ledgrow enough to research the whole thing and maybe you don't even have time to read tons of stuff that has minor effect on the grow itself. each one of that has a minor effect but when they all come together, the effect is much bigger.
i'm sure there is more than one reason for situation like this. you mentioned few of them but there still are some others.
i'm sorry to say that but i'm disappointed about that grow. medved is a very nice guy and i'm sure that he has a lot of growing experiences, but this grow looks almost like he is one of the first-timers. as far as i understood, the problems occured while he was away and someone else was taking care of the plants. it's not right to judge whoose fault it is but there is one thing i'm sure about: it's not because of the led setup. i'm not saying that because i built the setup but because i know what results he should get under that setup. a while ago i sold my lamp to a fist-timer. it was far less powerful than this one, less intense leds, only one type of clorophyle peaks covered, the guy had no experiences with growing. i was talking to him via MSN almost every day, telling him what to do, answering his questions, telling him what he's doing wrong (and he corrected that). it seemd just like he is my slave and doing what i say. at the end he finnished his first grow in his life with 1g/w.
in medved's case i'm sure he knows more about indoor growing than i do and i respect him for that. (i only had few of led experiments when i still used to grow mj and when i tested if/how things work.) for that reason i gave him only a couple of advice (or should i say suggestions) from which he considered a few of them but ignored all the rest. from what i read in this thread, he ignored a couple of good suggestions that were made by the people that actually know something about growing under leds.
every new technology changes your life and you have to get used to it if you want to use it. if you don't like it at first place, you most probably will never know it's advantages. if you don't try it, you also don't get that. i'm sure medved's next ledgrow will be better when he figures out that way of using leds and hps is not the same.
i read a post in one other thread where one of the users said: 'Seems like the old saying that if you want something done right, do it yourself, is true.' i don't intend to grow mj indoors in the near future (i don't grow it anymore because of the problems i had). so will i have to wait a few years for my next indoor to get the right results of that setup? i hope not.
i seriously doubt that overdose may be the reason for those problems. there are so many differences between growing under hps and growing under leds that have NOT been considered
. therefore this grow has a very high potential to fail and it looks like it will. i guess most of you don't even know what i'm talking about. i'm not judging you for that. it's not your fault that you are not interested in ledgrow enough to research the whole thing and maybe you don't even have time to read tons of stuff that has minor effect on the grow itself. each one of that has a minor effect but when they all come together, the effect is much bigger. i'm sure there is more than one reason for situation like this. you mentioned few of them but there still are some others.
i'm sorry to say that but i'm disappointed about that grow. medved is a very nice guy and i'm sure that he has a lot of growing experiences, but this grow looks almost like he is one of the first-timers. as far as i understood, the problems occured while he was away and someone else was taking care of the plants. it's not right to judge whoose fault it is but there is one thing i'm sure about: it's not because of the led setup. i'm not saying that because i built the setup but because i know what results he should get under that setup. a while ago i sold my lamp to a fist-timer. it was far less powerful than this one, less intense leds, only one type of clorophyle peaks covered, the guy had no experiences with growing. i was talking to him via MSN almost every day, telling him what to do, answering his questions, telling him what he's doing wrong (and he corrected that). it seemd just like he is my slave and doing what i say. at the end he finnished his first grow in his life with 1g/w.
in medved's case i'm sure he knows more about indoor growing than i do and i respect him for that. (i only had few of led experiments when i still used to grow mj and when i tested if/how things work.) for that reason i gave him only a couple of advice (or should i say suggestions) from which he considered a few of them but ignored all the rest. from what i read in this thread, he ignored a couple of good suggestions that were made by the people that actually know something about growing under leds.
every new technology changes your life and you have to get used to it if you want to use it. if you don't like it at first place, you most probably will never know it's advantages. if you don't try it, you also don't get that. i'm sure medved's next ledgrow will be better when he figures out that way of using leds and hps is not the same.
i read a post in one other thread where one of the users said: 'Seems like the old saying that if you want something done right, do it yourself, is true.' i don't intend to grow mj indoors in the near future (i don't grow it anymore because of the problems i had). so will i have to wait a few years for my next indoor to get the right results of that setup? i hope not.
Last edited:
G
Guest
im not bashing his style at all, i dig his whole setup...but the comparison is over because hps is winning hands down...im not saying that led isnt an emerging technology in the growing community because it is. im merely observing the end of a great side by side comparison of 2 lights you can use to grow.
budvapor
Member
LED_experiments said:i seriously doubt that overdose may be the reason for those problems. there are so many differences between growing under hps and growing under leds that have NOT been considered
i'm sure there is more than one reason for situation like this. you mentioned few of them but there still are some others.
yeah i wish i could do more research. just not enough hours in the day. but i also believe it is as it should. not everyone should research every single topic. it wouldn't be productive. we need to rely on each other doing different kinds of research and summarizing our findings.
so how about a summary for us in this case? what factors do you believe contributed to this problem?
