HLG vs HGL Side By Side

Kushash said:

I have no experience with strains that are supposed to develop purple stems.

I do have experience with my own strain having purple stems when things are not dialed in.
Mg deficiencies is one suspect I consider causing my stems to purple and I would guess other mistakes I made have caused them also.
When dialed in the same strain has green stems.

I can't tell the difference between strains that should and should not have purple stems just by looking at pictures.

Can any of you guys look at plant pictures without knowing the strain and tell the difference between purple stems that are strain related and purple stems that are not strain related?

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To feel comfortable making a diagnosis I have to touch a plant.

My newest COB fixture is three years old and I have a51 panels up it 6 years old. The obsolete I speak of is hps.

My green gelato im currently running and any other cookie based strains ive ran had red or purple stems using led or my.old clunky 400 watt hps.

Moflow said:

I can't tell any difference in smoking my 'red' weed and my mates green weed, same clones so to me it's not detrimental. Maybe it's stress related and the red plants are stronger?
At the end of the day you'd need to send samples off for scientific analysis to prove it.

My bottle of cal mag sits on the shelf gathering dust. I haven't used it for a few years now.
My indoor temperatures are cold. Flower room lights out around 12°C - 53F and when lights come on the temps rise to a max~ 29°C - 84°C. And that's in the summer.
I've been growing like this for years! Lol
Mind you my outdoors daytime temps are around 16°C today, night time around 8/9°C and I've 4 clones in the garden growing away.

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12C temps with lights off will absolutely cause red stems. install a dehumidifier and run it only when lights are off. thatll bring up temps. Do you get PM?

SSGrower said:

To feel comfortable making a diagnosis I have to touch a plant.

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lol!
That is cool!
I avoid making decisions on plant diagnosis in the problem section when I see purple stems because so many people feel it is strain dependent when again it could be a deficiency.
I was wondering if anyone can tell the difference between a deficient plant and a plant that naturally develops purple stems.
I figure there should be a way of telling them apart and would be curious to learn the difference.

Would you say the answer is no they can not be differentiated?

What are your thoughts @lukio?

Kushash said:

What are your thoughts @lukio?

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i dont have the answers lol...but IF it's deficient she'll sure as hell let ya know they always do.

So, no growing of the weeds under white light then @OneHitDone ? none? zero? just gonna ignore that and carry on scraping around on the floor looking for reasons to belittle white led, i guess...unless stephen is waiving one in front of ya...pwease stephen pweaseee gimme a white led....

hows that theory of yours? the one so wonderfully frozen in time by @BCBLondesLEDGrowLights in his sig.

are you still batting for ratty?

twat.

BCBLondesLEDGrowLights said:

12C temps with lights off will absolutely cause red stems. install a dehumidifier and run it only when lights are off. thatll bring up temps. Do you get PM?

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Id reword that to say cold temps definitely have the potential to cause red stems.
Its 54F right now, plant has seen as low as 42F and regularly in the 40s overnight. It also has seen over 100F during the day.


Purple is all below and environment is not on the top of my list of suspects.

Edit, she is a bit leafier than when she flowers under cob too.

SSGrower said:

Id reword that to say cold temps definitely have the potential to cause red stems.
Its 54F right now, plant has seen as low as 42F and regularly in the 40s overnight. It also has seen over 100F during the day.

View attachment 4348275
Purple is all below and environment is not on the top of my list of suspects.

Edit, she is a bit leafier than when she flowers under cob too.

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uhhh, theres purple at the bottom.... like, really really purple. I dunno bro, im just trying to help, im not trying to be an ass.

SSGrower said:

Id reword that to say cold temps definitely have the potential to cause red stems.
Its 54F right now, plant has seen as low as 42F and regularly in the 40s overnight. It also has seen over 100F during the day.

View attachment 4348275
Purple is all below and environment is not on the top of my list of suspects.

Edit, she is a bit leafier than when she flowers under cob too.

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id love to see a laser thermometer reading of your soil temp when lights are off.

lukio said:

i dont have the answers lol...but IF it's deficient she'll sure as hell let ya know they always do.

So, no growing of the weeds under white light then @OneHitDone ? none? zero? just gonna ignore that and carry on scraping around on the floor looking for reasons to belittle white led, i guess...unless stephen is waiving one in front of ya...pwease stephen pweaseee gimme a white led....

hows that theory of yours? the one so wonderfully frozen in time by @BCBLondesLEDGrowLights in his sig.

are you still batting for ratty?

twat.

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Calm down Waldo..... yes I have done a little weed growing under white led - admittedly not strips or boards, but older generation cob. It was buds the size of your thumb and overall unimpressive to me at the time. All one needs to to is sit back and watch all the problems growers are having in this led section to know that maybe it's not quite time to peel that was of hundreds out of your pocket and put your whole production into chaos just so they can say "look bro, I'm white led too".
Now clearly a lot of shit goes on behind the scene and many of us cross paths on other platforms. Stephen is a good dude who know's how to identify when someone has done himself and his business a solid.
Since when is Rspec white led?

OneHitDone said:

Calm down Waldo..... yes I have done a little weed growing under white led - admittedly not strips or boards, but older generation cob. It was buds the size of your thumb and overall unimpressive to me at the time. All one needs to to is sit back and watch all the problems growers are having in this led section to know that maybe it's not quite time to peel that was of hundreds out of your pocket and put your whole production into chaos just so they can say "look bro, I'm white led too".
Now clearly a lot of shit goes on behind the scene and many of us cross paths on other platforms. Stephen is a good dude who know's how to identify when someone has done himself and his business a solid.
Since when is Rspec white led?

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Who's having problems? A bunch of shitty growers? I have zero problems with white led your so full of shit. You compare some shitty old cobs you used once to lights that output significantly more. White led causes zero problems growers cause problems. Man I really thought you were a somewhat smart person a while ago but damn your stupid I guess that's why you only grow lettuce. Hopefully you learn how to grow weed someday this is a weed forum after all.

OneHitDone said:

All one needs to to is sit back and watch all the problems growers are having in this led section

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thats exactly your problem right there.

Ryante55 said:

Who's having problems? A bunch of shitty growers? I have zero problems with white led your so full of shit. You compare some shitty old cobs you used once to lights that output significantly more. White led causes zero problems growers cause problems. Man I really thought you were a somewhat smart person a while ago but damn your stupid I guess that's why you only grow lettuce. Hopefully you learn how to grow weed someday this is a weed forum after all.

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Damn bro, you sure bring the positivity to these forums lol
I know many are doing well with led but there are also a LOT who are not.
If I were to link every post that has to do with a plant health issue under led we would all be scrolling for days and you know it

OneHitDone said:

Damn bro, you sure bring the positivity to these forums lol
I know many are doing well with led but there are also a LOT who are not.
If I were to link every post that has to do with a plant health issue under led we would all be scrolling for days and you know it

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You must be on alot of other forums. on here alot of first time growers have problems and people with blurple crap have problems there's a handful of growers that try to blame their equipment. Go ahead just try to link 5 see if you can find 5 experienced growers having issues.

lukio said:

i dont have the answers lol...but IF it's deficient she'll sure as hell let ya know they always do.

So, no growing of the weeds under white light then @OneHitDone ? none? zero? just gonna ignore that and carry on scraping around on the floor looking for reasons to belittle white led, i guess...unless stephen is waiving one in front of ya...pwease stephen pweaseee gimme a white led....

hows that theory of yours? the one so wonderfully frozen in time by @BCBLondesLEDGrowLights in his sig.

are you still batting for ratty?

twat.

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You cats are entertaining...

BCBLondesLEDGrowLights said:

id love to see a laser thermometer reading of your soil temp when lights are off.

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Me too.

Lights have been "on" for about 3 hrs air temp is 72ish.

A hybrid with strong equatorial sativa heritage that was germinated in same conditions.


I have method for providing some assistance with soil temp for germination tho.

Id bet that small container gets down pretty close to the ambient air temp, the big one probably dosent go much below 50 because water flowing through those hoses is warmed and they wrap around the floor of the coldframe. In my indoor setup nightime set point is 60F and daytime of 75 - 80, I also have to keep condesation at bay with a dehuie.

If these were in my indoor under the temps they are now, they would probably purple, but I feel that is because the light lacks IR. If it had IR it would be able to warm the plant without warming the surroundings a big step up in effeciency vs. using a heater to heat the air.

Excellent point on soil temp.

Edited to correct, the use of IR would raise the temps of the plant and surfaces without excessivly heating the surrounding air.

BCBLondesLEDGrowLights said:

uhhh, theres purple at the bottom.... like, really really purple. I dunno bro, im just trying to help, im not trying to be an ass.

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That all happened indoors under cob. Sorry you are poppin in a tad late.

You are not being an ass.

Ryante55 said:

You must be on alot of other forums. on here alot of first time growers have problems and people with blurple crap have problems there's a handful of growers that try to blame their equipment. Go ahead just try to link 5 see if you can find 5 experienced growers having issues.

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Take a deep breath and let your chest relax bro, no need to get all puffed up.
The experienced growers having issues don't post so publicly - DUH......
Doesn't mean a lot of good growers aren't trying to work around issues.
What is does seem is that soil growers are having less issues than those in coco / inert media.

If all experienced groers arent posting, duh....then how are we to make the assumption that they are having problems. Quite the conumdrum of logic in general....

Abiqua said:

If all experienced groers arent posting, duh....then how are we to make the assumption that they are having problems. Quite the conumdrum of logic in general....

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A lot of people talk and share a ton of info that does not make it into a post for all to see - pretty simple eh??