Led Users Unite!

[jdizzle22]

This is a rather funny argument to pop up in an LED thread, but it does bring up something people often over look. LED does produce so little heat compared to HID that you may have issues with low temps using LED.

I feel its accurate people say LED puts out about 80% less heat per watt than HPS. I have a 395w (it really uses that much, not half) that I use in a grow tent in my 12x12 bedroom (counting closet). I always keep my bedroom door and heat vent closed, and if its cold outside like it usually is around Kent/Seattle (low 60s to low 50s most of the year), I don't even need to open the window unless my computer is on (just the light only raises bedroom ambient 2 degrees after a whole day (and even then it would only be by an inch or 2). *********

But some growers have said they had issues with LED not keeping their grow areas warm enough during the winter, especially if they had at all relied on their grow set ups to warm other parts of the house.


*********- When I had my 400w HPS instead of my 395w LED the temps in the tent below the light were at least 10 above ambient (bedroom tent is in), and above the light about 20 over (with LED under isn't any warmer, and above is only 7 degrees). With the window open all the way all day my room would always be 75-80 with as much power going into HPS

 

[ColoradoLove]

Yea man no question HID put off head (which is why we want LED!) but they don't put off anything when they're turned off. So when people are like yea your temps are gonna be low, add some HID, makes more sense than a heater! That's true if you need heat during lights ON, but you're still gonna need to buy that heater because you will for sure need heat during lights off!

Good real world temp info for those looking at LEDs dizzle

 

[abecsta]

Yea man no question HID put off head (which is why we want LED!) but they don't put off anything when they're turned off. So when people are like yea your temps are gonna be low, add some HID, makes more sense than a heater! That's true if you need heat during lights ON, but you're still gonna need to buy that heater because you will for sure need heat during lights off!

Good real world temp info for those looking at LEDs dizzle

i use hps to heat my room now but what ive done is have the light on during the night when we can get down to 8C and off during mid day when its closer to 20C (26 in roof today)
i also have a fan heater in the room (heater turned off now) which i plan on wiring a thermostat to the heating part of so that when it cools the heater turns on.
no point wasting power when lights are on also 720watts of grow power now

 

[jdizzle22]

Yea man no question HID put off head (which is why we want LED!) but they don't put off anything when they're turned off. So when people are like yea your temps are gonna be low, add some HID, makes more sense than a heater! That's true if you need heat during lights ON, but you're still gonna need to buy that heater because you will for sure need heat during lights off!

Good real world temp info for those looking at LEDs dizzle

Yeah what he said, you run HID during the night in winter silly billy! Or hell grow autos at 18-20 hours of light a day, or veg at 24 hours a day, or do half during day half at night, as long as your insulation is any good you should be able to retain enough heat a short night period. All kinds of possibilities! But LED just doesn't make enough heat for a lot of people during the winter.

 

[meharmon]

Here's what I have started playing for my plants (and all over the house as sounds travel) "Sounds of the earth-- morning birds" . If you Google that, torrents come up for it ahem. IF anyone isn't playing music for their plants, I promise you they like birds, and you should be giving them sound too based upon all the evidence (mythbusters even did a segment on it-- though I don't use them as confirmation because they totally half-assed HHO). Hope someone likes the birds, too.

 

[budlover909]

"There is no way enough heat would get stored up in your insulation"

that's because insulation doesnt store heat it is a barrier to prevent it from escaping its not a storage medium the air itself is the storage medium for the heat energy

hids will put off heat that what thermal resistance and thermal conductivity is all about concrete will store heat direct ir radiation and photons will 'charge' it thats thermodynamics

hid gets 1200F and hotter after being in operation for just a couple of hours and an enclosed bulb will stay hot for a couple of hours longer depending upon construstion of glass differnt glass holds different heat think like a coffee mug made from ceramic and one made from clear glass ceramic one is better holding heat

in my garage, despite a concrete subfloor and tileiing it gets hot and stays hot after 12 hours of hid operation thats why i went led

physics is your best friend bro

also the specifics on the guy with the plant sound patent found it bass notes at b2 and b3 125hz and 250hz stimulate the sodium ions making stomata open greatly increasing transpiration rates thats prolly why plants with loads of bass didnt do too well not enough water to keep up with transpiration rates the plant dries itself out

 

[BudBaby]

Here are some pics of my 4 ladies under a 140 watt veg light custom built off a guy on ebay. The 3 plants that have been topped are just over 4 weeks old, i messed up for about the first week and had the light to close. As my buckets are big i think i wasted alot of the light that was being given off. Since i have raised the light they have responded alot better as you can see from the untopped plant which is only 31/2 weeks old

As its my first grow i think i messed around with the ph to much as i got mag defiency on all of the topped plants in the early stages, since i have been more confident leaving the buckets and not messing around with them all new growth has been healthy as you can see.

So far im really pleased with this light, i cant wait for a few weeks when i can move them to my flower cab which has 280 watts of led waiting

 

[ColoradoLove]

Over you budlover. I'm not gonna keep going in your clueless circles over and over and over and over

Nice looking ladies budbaby! Thanks for getting this back in track. What strain(s) you got going there?

 

[BudBaby]

Over you budlover. I'm not gonna keep going in your clueless circles over and over and over and over

Nice looking ladies budbaby! Thanks for getting this back in track. What strain(s) you got going there?

I am doing big buddah blue cheese this time, i may do super lemon haze next im not sure yet. Im so glad i got a veg cab aswell as it means i can really take my time vegging the ladies

These light were really expensive so im expecting good results from them.

 

[ColoradoLove]

You gonna get your next strain vegging as soon as you send the BC into the flower cab?

 

[ninjagaiden]

my two GLH units came in. Both 290s.

Ill be growing legendary REZ SD IBL beans, just popped. I have a journal running, just not on RIU, as I frequent another forum more. If interested, shoot my a PM and ill hook you up with a link.

 

[BudBaby]

You gonna get your next strain vegging as soon as you send the BC into the flower cab?

Im not sure yet ill wait to see how long these take to veg to how i want them(approx 12") but basically as soon as the flower cab is empty ill be adding the next strain If i can get 10-15 oz every 8-10 weeks ill be very happy

 

[660nm420]

"Aren't you the same guy that pretended insulating a room would allow an HID to heat it during 12 hours of darkness?"

i see you got a reading comprehension problem bro read back some and see what the other people that can infer said and maybe while youre at it learn how cocrete and insulation can keep a room nice and hot long after a light goesof how you think your house stays col or hot insulation keps shit in and out and concrete slabs wil heat up absorb energy and radiate it out

It's "I see you HAVE a reading comprehension problem." It's not, "I see you GOT a reading comprehension problem." "Got" is a past tense verb meaning to acquire. If you have already long ago acquired poor comprehension skills from bad habits or even say poor grammar and punctuation skills that make reading comprehension more difficult than the proper present case verb form is HAVE. Example, "You have poor grammar skills." I could care less as long as you are not commenting on the abilities of others.

 

[660nm420]

Doesn't anyone on here get tired of having to constantly "clarify" information. I mean, good thing the clueless have you guys on here working around the clock for free. I get exhausted just trying to follow this thread when people comment just to hear themselves typing. It would be an entire waste of my time to read if it wasn't for the knowledgeable users, ie Hudson, Dunit, jdizzle(sometimes) cLove, and and the blackstar crew t-shirt ninja and kushgrove. I wish there was an administrator that could delete any pointless trolling comments.

 

[ninjagaiden]

dont bother stressing, its the fucking internet man

 

[jdizzle22]

Doesn't anyone on here get tired of having to constantly "clarify" information. I mean, good thing the clueless have you guys on here working around the clock for free. I get exhausted just trying to follow this thread when people comment just to hear themselves typing. It would be an entire waste of my time to read if it wasn't for the knowledgeable users, ie Hudson, Dunit, jdizzle(sometimes) cLove, and and the blackstar crew t-shirt ninja and kushgrove. I wish there was an administrator that could delete any pointless trolling comments.

lol thanks, sometimes

I have to say ninja, while I wouldn't worry about it I think I finally have something negative to say about a GLH panel. See how the fans are grouped together with all that empty space around the edges? I've noticed it before, but this is the first time that such a gap was actually filled with LEDs. Bigger models usually have that gap around the edge so you can fit more lights in but still have them all under a fan, so I'm rather surprised about that model. It was one reason why I went GLH over the others, because they had made sure to put fans over all the LEDs instead of some or most. But GLH is supposed to do a good job of testing their units, and they do a better job of building them to last than a lot of companies, so again I doubt this is something to get worked up about. .

I mean really if you look aat the pics close it seems as if only 1-2 LEDs deep around the outer edge of the panel are not under fans, but it should be ok anyway since all the air has to go out around the edges of the light anyway (so they still get good air cooling I imagine)

And be sure you keep them high enough above little plants, I threw some seedlings under my 395w and they were probably about 24-28 in from the glass and after 1 month they are only the size of 3 week 400w HPS plants (the one that had 5 and the one that had 10 days under CFL are much better off than the seedling plants were). I think the issue is the light being so intense that every possible node site grows at once and so the plant grows incredibly slowly because it is able to stuff its face much more after 4 weeks than it could after 1 or 2. Be sure to keep those things at least 36in above seedling (and probably plants under a month of age). You might be able to get them closer though since they don't use as many watts as mine.

PS: My best guess is they figured the LEDs in the panel would be better off being slightly further apart from each other than all being closer but directly under a fan instead of being up to couple inches from one (that and it would be especially ok since they still get good air flow)

PS: haha I just noticed that the power cord plugs into the top of the unit instead of the side, not sure if thats new or standard but I would have preferred mine be on top (I think it makes more sense for most peoples)

 

[puffenuff]

Doesn't anyone on here get tired of having to constantly "clarify" information. I mean, good thing the clueless have you guys on here working around the clock for free. I get exhausted just trying to follow this thread when people comment just to hear themselves typing. It would be an entire waste of my time to read if it wasn't for the knowledgeable users, ie Hudson, Dunit, jdizzle(sometimes) cLove, and and the blackstar crew t-shirt ninja and kushgrove. I wish there was an administrator that could delete any pointless trolling comments.

Dont get me wrong, I don't want trolls here anymore than you do, but since when is asking for clarification on something considered to be a bad thing? Sorry if 90% of the people posting stuff online never learned basic rules of written communication, but how else are we supposed to figure out what the fuck that person just meant if we don't ask for clarification? If youre tired of answering questions, then don't answer anymore. Simple as that. Don't write a little rant complaining about members wanting to learn.

 

[puffenuff]

Back to the LED topic, does anyone know of a link to a page that goes into colors and their respective wavelengths?

 

[ninjagaiden]

Yo jdizzle,

I have the same gripes as you.

The panel its self is solid, and has the best hanging hardware i have seen. I love the idea of a seperate power cord, but with the plug itsself was in a corner of the unit to make hanging them as clean as possible.

I dont start putting my plants under LED's until they have about 2-4 nodes. I always start under t5's Something about the soft t5 glow gets plants started better IMO.

Either way i wont claim the greatness of these units untili get a fullgrow out of the. As of now i am in experiment mode

 

[jdizzle22]

Yo jdizzle,

I have the same gripes as you.

The panel its self is solid, and has the best hanging hardware i have seen. I love the idea of a seperate power cord, but with the plug itsself was in a corner of the unit to make hanging them as clean as possible.

I dont start putting my plants under LED's until they have about 2-4 nodes. I always start under t5's Something about the soft t5 glow gets plants started better IMO.

Either way i wont claim the greatness of these units untili get a fullgrow out of the. As of now i am in experiment mode

Yeah I definitely learned my lesson, now I'm going to put them in the PC grow box up to 4-6 weeks before the tent plants are done drying so they can get a good head start first (a 24w CFL for each seedling for a week or 2 would even be enough). I imagine this shouldn't be much of an issue for people with seedlings they can keep the light at least 4ft from, its also probably much less severe with a 180 or 290w than my 395w or a 500w. Damn LED you powerful!