The Sauga Ends Here

[Virgin Ground]

Did I understand you correctly when I thought you stated that PHing your nutrient solution is unnecessary when growing in Promix HP??

I don't pH when using the Pro Mix all-purpose. It's buffered like soil.

 

[ProfessorFlora]

I’m a vegetarian. Is it ok I was still laffing my tenderloin off? Who knew the pot of meat related humour was so deep!?

You had me-at vegetarian

 

[ProfessorFlora]

Sorry Sauga

 

[MrSauga]

Did I understand you correctly when I thought you stated that PHing your nutrient solution is unnecessary when growing in Promix HP??

That is correct. Promix HP is a buffered media and regardless of the pH of your nute solution the media will buffer it to the correct range. It's no different than Fox Farm Ocean Forest, Miracle Grow Organic Potting Soil or any other media that has lime or humus in it. Those are typically the main ingredients for proper buffering. In Hydro or passive hydro you don't have these buffers built in so you need to pH accordingly your nute solution.
You may get two grows before you lose the buffering agents but most will just use it once. Here's a snippet from the Promix site.

The primary components of commercial growing media are sphagnum peat moss and composted pine bark, which are naturally acidic with a pH in the 3.5 to 5.0 range. Other components, such as perlite, vermiculite and coir, are fairly neutral to slightly basic in pH. For most greenhouse crops, the ideal growing medium pH for maximum nutrient availability is between 5.5 and 6.5. In order to achieve this ideal pH, soil blenders must add limestone. The limestone is applied in a granular form of either dolomitic limestone, calcitic limestone or a combination of the two.

Dolomitic limestone dissolves slowly in the growing medium, resulting in longer term pH adjustment. Calcitic limestone, on the other hand, dissolves fairly quickly, resulting in faster initial pH adjustment, but it does not last as long as dolomitic limestone. Both types of limestone need moisture and a minimum amount of time to dissolve, and have an impact on the growing medium pH. As a general rule, it takes approximately seven days after the growing medium is watered in during planting before the limestone is activated and the pH stabilizes, reaching the intended pH.
SOURCE: Worth the read.

However, the water pH has little influence on the pH of the growing medium.
The pH of the growing medium is important because it determines the availability of the nutrients. For example, the availability of micronutrients like iron, manganese, zinc and copper increases when the pH is below 5.5. On the other hand, the availability of molybdenum, calcium and magnesium decreases. The opposite occurs at pH higher than 6.5. Based on these facts, we recommend maintaining the pH of the growing medium between 5.5 and 6.5.
SOURCE: Worth the read

You can add all the pH up and down you want, but Promix and other buffered medias are just going to do with it what it wants anyhow.
Hope that @InTheShed's some light on the question. I added that because he originally started all this discussion here

I’m a vegetarian. Is it ok I was still laffing my tenderloin off? Who knew the pot of meat related humour was so deep!?

LOLOL! Seems to be a rare bunch of comedians around here.

You had me-at vegetarian

lol, nice touch!

 

[Stunned]

Thanks @MrSauga
I knew I had read it somewhere and when I went to re read it of course I couldn't find it.
Appreciate the info and sorry for hijacking your thread

 

[MrSauga]

Thanks @MrSauga
I knew I had read it somewhere and when I went to re read it of course I couldn't find it.
Appreciate the info and sorry for hijacking your thread

No problem at all and hijack away

 

[Botanical Bondage]

What kinda grow journal doesnt include harvest weights?

Thats like a gif that ends too soon.

Wtf sauga?

Next youre gonna tell us when you do weigh, you get wet weight and try and math guesstimate dry weight

 

[MrSauga]

What kinda grow journal doesnt include harvest weights?

Thats like a gif that ends too soon.

Wtf sauga?

Next youre gonna tell us when you do weigh, you get wet weight and try and math guesstimate dry weight

lol, I only wet weighed once and then I thought there was no point in that really. If you like I can make up a number. Is there any particular one you like?

 

[Mr. Krip]

lol, I only wet weighed once and then I thought there was no point in that really. If you like I can make up a number. Is there any particular one you like?

I vote for 420! I am slightly biased, however, and more than slightly stoned, so, really, it's up to you!

 

[MrSauga]

I vote for 420! I am slightly biased, however, and more than slightly stoned, so, really, it's up to you!

I wish I thought of that myself. If I recall correctly it did weigh 420g.

 

[oldsmokey]

Can't go wrong with that number

 

[ProfessorFlora]

If you like I can make up a number. Is there any particular one you like?

We won't know if we like it until you make it up. What about a "Quergleflex"

 

[MrSauga]

What about a "Quergleflex"

Works out to 63 on Xunanian 7 so that won't work. What else you got?

 

[Botanical Bondage]

You guys are hilarious. Thats why I love this site. Well, that and all the cannaporn and amazing info.

The wet weight thing was a little dig at emilya. Who i believe is the math genius who "sees" math problems in 3d and has a forumla for guessing dry weight based on wet weight.
If i misremember that and its one of the other lady growers im sorry.

 

[syenite]

Did I understand you correctly when I thought you stated that PHing your nutrient solution is unnecessary when growing in Promix HP??

The thread

Dolomitic limestone dissolves slowly in the growing medium, resulting in longer term pH adjustment. Calcitic limestone, on the other hand, dissolves fairly quickly, resulting in faster initial pH adjustment, but it does not last as long as dolomitic limestone. Both types of limestone need moisture and a minimum amount of time to dissolve, and have an impact on the growing medium pH. As a general rule, it takes approximately seven days after the growing medium is watered in during planting before the limestone is activated and the pH stabilizes, reaching the intended pH.
SOURCE: Worth the read.

This is now tattooed on my soul.

 

[BigD13]

That is correct. Promix HP is a buffered media and regardless of the pH of your nute solution the media will buffer it to the correct range. It's no different than Fox Farm Ocean Forest, Miracle Grow Organic Potting Soil or any other media that has lime or humus in it. Those are typically the main ingredients for proper buffering. In Hydro or passive hydro you don't have these buffers built in so you need to pH accordingly your nute solution.
You may get two grows before you lose the buffering agents but most will just use it once. Here's a snippet from the Promix site.

The primary components of commercial growing media are sphagnum peat moss and composted pine bark, which are naturally acidic with a pH in the 3.5 to 5.0 range. Other components, such as perlite, vermiculite and coir, are fairly neutral to slightly basic in pH. For most greenhouse crops, the ideal growing medium pH for maximum nutrient availability is between 5.5 and 6.5. In order to achieve this ideal pH, soil blenders must add limestone. The limestone is applied in a granular form of either dolomitic limestone, calcitic limestone or a combination of the two.

Dolomitic limestone dissolves slowly in the growing medium, resulting in longer term pH adjustment. Calcitic limestone, on the other hand, dissolves fairly quickly, resulting in faster initial pH adjustment, but it does not last as long as dolomitic limestone. Both types of limestone need moisture and a minimum amount of time to dissolve, and have an impact on the growing medium pH. As a general rule, it takes approximately seven days after the growing medium is watered in during planting before the limestone is activated and the pH stabilizes, reaching the intended pH.
SOURCE: Worth the read.

However, the water pH has little influence on the pH of the growing medium.
The pH of the growing medium is important because it determines the availability of the nutrients. For example, the availability of micronutrients like iron, manganese, zinc and copper increases when the pH is below 5.5. On the other hand, the availability of molybdenum, calcium and magnesium decreases. The opposite occurs at pH higher than 6.5. Based on these facts, we recommend maintaining the pH of the growing medium between 5.5 and 6.5.
SOURCE: Worth the read

You can add all the pH up and down you want, but Promix and other buffered medias are just going to do with it what it wants anyhow.
Hope that @InTheShed's some light on the question. I added that because he originally started all this discussion here


LOLOL! Seems to be a rare bunch of comedians around here.

lol, nice touch!

Thanks for all that. Good stuff. I clicked on your links and read some of their website articles. They have a whole bunch more under the “Training Center” tab on their website. Well worth the time to read up on ”real cultivation science“ instead of a lot of the “bro science” stuff people post.

 

[Botanical Bondage]

Real science is just bro science done in lab coats and on someone elses dime.

 

[MrSauga]

Thanks for all that. Good stuff. I clicked on your links and read some of their website articles. They have a whole bunch more under the “Training Center” tab on their website.

Exactly. Promix guys really have it going on. They know their shite and have some great videos and well worth the visit as you mentioned.

 

[InTheShed]

Did I understand you correctly when I thought you stated that PHing your nutrient solution is unnecessary when growing in Promix HP??

As has been pointed out above, yes!

Real science is just bro science done in lab coats and on someone elses dime.

Another difference is that the folks in lab coats often completely debunk the bro science

or any other media that has lime or humus

I didn't know that humus itself was a buffering agent. I thought soil manufacturers add lime to their humus mixes as well.

Hope that @InTheShed's some light

 

[MrSauga]

I didn't know that humus itself was a buffering agent. I thought soil manufacturers add lime to their humus mixes as well.

Unless I'm misunderstanding something humus alone contains buffering agents... whatever those may be.

Forest humus is of significant importance to the forest ecosystem and soil development. Different forms of humus modify the course of natural reproduction of forest stands and thus can influence silvicultural practices. Forest humus is the home of many important and useful organisms. Soil well endowed with humus is a living ecosystem unto itself. In such soils the humus is a source of nutrients, growth substances and buffering agents, it is nature's way of maintaining and improving soil fertility.
[SOURCE]

Hope you're having a good weekend!