Red/purple stems and mag deficiency with LEDs?

[Budzbuddha]

Let me guess …….Amare Bar 8

 

[curious2garden]

Let me guess …….Amare Bar 8

OMG that's so stale even I know that one! LOL still thanks for the player card info

 

[Budzbuddha]

Figured i was pretty close on bar 8 since he was pushing diffuser plastic for quantums. Or least those Pro 4 lamps. I remember the big shill back a few years ago.

Secret chinese tech

 

[curious2garden]

Figured i was pretty close on bar 8 since he was pushing diffuser plastic for quantums. Or least those Pro 4 lamps. I remember the big shill back a few years ago.

Secret chinese tech

I thank god pot cleanses that from my short term memory. I think if that shit made it to long term storage I'd have to quit RIU.

 

[Budzbuddha]

How about the suncloak and “ hut “ ?

If I remember right Hybrid would try to get as many “ tester “ rigs out of manufacturers as possible. I remember scores of peeps draggin him about it. It got so bad i thought RIU put the poor guy on RIU’s most banned poster.

I love nostalgia

 

[Budzbuddha]

New sock Old news

Reminds me of ex wife trying to “ reinvent “ herself with fish lips and karen cut.

 

[Comparator]

Let me guess …….Amare Bar 8

Wrong

 

[Budzbuddha]

So spill the beans …. I’m sure president xi or jack ma wouldn’t care.

Interested in the “ Lucky Golden Swan light with Elmer glue conformal coat on B stock sanan 2835’s “
or whatever it’s called.

Let’s hear what the secret light is ….. *popcorn cooking

 

[Budzbuddha]

*crickets

 

[Southernontariogrower]

So why red leaf stems? Isn't that what post started as? I've got healthy as f plants and red leaf stems?

 

[DrDukePHD]

mag gets locked out because people love pH down

if you pH to 6.5 you won't need epsom salt or any other amendment just your regular old cannabis nutrients

Wait, are you saying PH down potentially causes mag lockout?

 

[furbolg]

Wait, are you saying PH down potentially causes mag lockout?

yeah magnesium and calcium are the first elements to be locked out when pH stays too low for too long.

 

[Southernontariogrower]

yeah magnesium and calcium are the first elements to be locked out when pH stays too low for too long.

View attachment 5179455

Great chart, proper ph pen storage and calibration is necessary. Haven't phed in ages, runs around 6 after adding nutes so just don't now. Less problems than when l used ph down. Fluctuating 5.5 To 6.5 seems the right way to ph. If you believe chart which l do.

 

[furbolg]

Great chart, proper ph pen storage and calibration is necessary. Haven't phed in ages, runs around 6 after adding nutes so just don't now. Less problems than when l used ph down. Fluctuating 5.5 To 6.5 seems the right way to ph. If you believe chart which l do.

true. bluelab ftw. you want that pH fluctuation in the root zone, not necessarily your nutrient solution, so solution pH depends on your medium. For example I use a peat sunshine mix 4 for dtw hydro. Peat moss is highly acidic when wet and over time the lime gets flushed out of the medium. In my experience pH my nutrient solution to 6.5 allows for a root zone to fluctuate through the 5-7 range during the process of irrigation and drying. If I irrigate with 6.2pH or lower for two irrigations in a row, I start to see calcium and magnesium lockouts almost immediately. In recirculating systems or dtw without a highly acidic medium I'm sure that fluctuation of the pH solution is more important but I've been letting my plants and the lime in my medium handle it for years.

 

[Roguedawg]

If you are using coco or dwc. just increase total EC, not with just Ca and Mg.

 

[youraveragehorticulturist]

I think red Stems and funky magnesium burns are really Light Stress. Like the dudes new to LED are getting their plants too close to the intense lights.

Red Leaf Stems and Red streaks in stems and branches of healthy plants seem to be a good thing. Under any lights.

The solid red stems and purple/grey patches under LED seem to be a bad thing. When that shit happens to me the stems and branches and leaves are green and look OK. Then just above that, where the light is too intense the colors change and shit gets dry and brittle looking.

 

[Budzbuddha]

@Comparator bump

We are all Waiting on that magic light update .
Chinese RMB burning hole in pocket ….

 

[xtsho]

Red and purple stems are often just strain related. I've been growing under HID's for decades and have had hundreds of healthy plants with red/purple stems. I never gave it any thought as the plants were healthy and produced well. I didn't start to see people panicking over it until I started reading the forums five or so years ago. It's not necessarily a deficiency or anything to do with LED lights. I think many are quick to create a problem when one doesn't exist. Such is the cannabis growing scene.

 

[Budzbuddha]

Red / purple stems often leads to the belief that magnesium is out of whack - not necessarily true.

Some genetics express coloration . As long as it looks healthy . Most of time calcuim / magnesium are already covered in nutes / bagged medium or water source.

However ……….. Excess calcium CAN cause lockouts.

 

[Comparator]

Red petitoles are usually from a burple light overabundance in reds compared to the other wavelengths. I found purple, the more menacing w/ a tendency to purple full stems as a reaction to high intensity white dominant (green,yellow dominant) w/ Cyan, often far red & violet defficient. Like cobs. I couldn't veg with cobs unless real dim, supplemental helped. Took me a long time to consistently beet the purple stems n low yeilds under white. Epsom but not to much & dwindle down at the end. Nice if they dry daily or every other. Air movement on the floor and not direct as primary creating flow. 78-84•f, 55-65% humidity lights on, 45/50% lights off. No standing water. Air exchanges lights on/off. Check run off. Goodluck!