The Absolute Truth About PH

[Antidote Man]

So I wanted to clear this up. When I do a google search for proper PH levels for cannabis, most of the responses say between 5.8 - 6.2 is optimum. But I find posts everywhere on multiple forums saying 6.5 - 7.5 is optimum. I find others that say between 6-7. What is the consensus here?

And I'm talking soil, standard top down watering, after nutrients are mixed into the watering pail.

 

[PadawanWarrior]

So I wanted to clear this up. When I do a google search for proper PH levels for cannabis, most of the responses say between 5.8 - 6.2 is optimum. But I find posts everywhere on multiple forums saying 6.5 - 7.5 is optimum. I find others that say between 6-7. What is the consensus here?

The lower pH levels are for hydro with salts. With soil it should be higher.

 

[Antidote Man]

" 5.8 – 6.2

Cannabis, like many plants, prefers slightly acidic soil conditions. It tolerates a wide pH range (5.0-7.0) without symptoms of bronzing or interveinal chlorosis (yellowing of top leaves), but pH levels outside of the optimal range of 5.8 – 6.2 will limit growth. "

That's what they say on google...

 

[J2M3S]

" 5.8 – 6.2

Cannabis, like many plants, prefers slightly acidic soil conditions. It tolerates a wide pH range (5.0-7.0) without symptoms of bronzing or interveinal chlorosis (yellowing of top leaves), but pH levels outside of the optimal range of 5.8 – 6.2 will limit growth. "

That's what they say on google...

Who is they? Don’t believe all you read on the internet.

 

[Antidote Man]

'They' are google. Instead of laughing about it, answer the question.

 

[J2M3S]

'They' are google. Instead of laughing about it, answer the question.

The question has been answered many, many times.
You want to talk about it more.
I laughed. Deal with it.

 

[Antidote Man]

how about a link? I'd like to be able to trust what I read on the internet..

 

[PadawanWarrior]

how about a link? I'd like to be able to trust what I read on the internet..

I can't explain the science behind it but I trust Bluelab. I have that soil pen, .

pH, EC and temperature – Measuring and adjusting your fundamental parameters

Want the lowdown on pH, EC and temperature? In this post, we take a closer look at each parameter and tell you how to adjust out-of-range readings.

blog.bluelab.com

.

 

[Antidote Man]

fuckin great. now, how about some more information from people looking to laugh. I've got two sources verified, but yet I've seen so many more saying yet other levels. So far I think Bluelab's the winner. my apology if this has been covered, but I've found so much contradictory info...

 

[waterproof808]

PH depends on medium...rockwool and coco 5.8-6.2, peat based can be higher 6.0-6.4.

 

[PJ Diaz]

So I wanted to clear this up. When I do a google search for proper PH levels for cannabis, most of the responses say between 5.8 - 6.2 is optimum. But I find posts everywhere on multiple forums saying 6.5 - 7.5 is optimum. I find others that say between 6-7. What is the consensus here?

And I'm talking soil, standard top down watering, after nutrients are mixed into the watering pail.

I asked ChatGPT and this is what it told me..

 

[PadawanWarrior]

I asked ChatGPT and this is what it told me..

View attachment 5275961

 

[Tracker]

@Antidote Man this is from a horticulture text book....

 

[Drop That Sound]

With soil, the plant isn't the only living thing affected by the PH. The number of different organisms making up the microflora is probably in the billions or something. Some of the microbes even help to manage it, by expending energy I think..

 

[Antidote Man]

 

[xtsho]

I never pH when I'm growing in soil. That's even when feeding nutes not just plain water. Never have any issues. I think many are doing unnecessary things.

 

[Budzbuddha]

Most bagged medium have ph buffers anyways … so there’s that.

Plus the fact ph can drift - soil or hydro

 

[Jjgrow420]

Most bagged medium have ph buffers anyways … so there’s that.

Plus the fact ph can drift - soil or hydro

Tokyo drift?

 

[DoubleD5374]

Most bagged medium have ph buffers anyways … so there’s that.

Plus the fact ph can drift - soil or hydro

Tell me about it , I set my ebb and flow 55 gallon reservoir to low 5s , within 24 hours it raises back up
To mid to high 6s . I have to add a small amount of
Ph down daily . Every 3.5 days h202 - and I change the reservoir out entirely after 7 days . I also run 4 large air stones in my reservoir , completely sealed and no light . I run emerald harvest liquid nutes and the clones seem to love it .

my soil grow I run FF nutrients and RO water , and have to add a small amount of ph up “usually around 5 flat “but I’m sure it would be fine as ph tends to creep in soil as well .

 

[PadawanWarrior]

Tell me about it , I set my ebb and flow 55 gallon reservoir to low 5s , within 24 hours it raises back up
To mid to high 6s . I have to add a small amount of
Ph down daily . Every 3.5 days h202 - and I change the reservoir out entirely after 7 days . I also run 4 large air stones in my reservoir , completely sealed and no light . I run emerald harvest liquid nutes and the clones seem to love it .

my soil grow I run FF nutrients and RO water , and have to add a small amount of ph up “usually around 5 flat “but I’m sure it would be fine as ph tends to creep in soil as well .

Sounds like you have lots of calcium carbonate in your water. That will add alkalinity and make the pH want to rise. Bubbling it will also raise it, but not as fast as alkalinity. What's your water like?