Please Help!

Emilya said:
oh... yes he did. That is some very acidic soil then, not even designed for growing regular houseplants or cannabis. Most proper soils are set to 6.8 pH. Egads... 5.7 soil?? That probably would set up a negative drift and your previous advice was probably closer to what is needed than mine.... @Known, can you confirm this? Did you buy some soil made for planting orchids?
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Acidic soil will grow lots of weeds and other plants fine. 5.8pH is on the low end but as mentioned as soil organic matter begins to break down the pH will go up slightly over time.

Think of how it works in a field not so much hydroponics.

We all are forgetting that the plants and the microbes are actually how the soil pH is changed. Water has very little to do with soil pH. Rain water has a pH of around 5pH and sometimes less. Farmers will lime fields the season BEFORE they actually grow anything in that soil IF the soil is very acidic. Usually low soil pH happens due to a lack of soil organic matter. This lack of soil organic matter is how we got started with fertilizers. Farmers wont do ANYTHING to the soil pH unless they have an accurate soil test.

Soil that is bought in a bag will have a pH RANGE - no way every bag is going to be 5.7pH.

I looked it up - this soil mix has a soil pH of:

"composiszione neutral: Peat Moss Perlite fertilizer Slow transfer pH (H2O) 6.0 - 7.0"

Then there's the pH AT THE ROOT ZONE - this is where the action takes place and where the plants uptake nutrients. Plant root exudate and the microbes at the root zone is where the pH change happens.

overthinking? follow the recommendation on the nutrient pack and dont worry about soil pH - you likely have no idea really what it is without a LAB TEST anyways. Plants are pretty resilient. They have the ability to change the pH at the root zone rhizosphere.

Rhizospere : The region of soil in the vicinity of plant roots in which the chemistry and microbiology is influenced by their growth, respiration, and nutrient exchange.

pH changing water? I'm not clear what the worry is.

The pH in the rhizospere is changed by the roots and the microbes depending on what the plants needs are at any given moment in time and it is in constant change.



Known said:
I have plagron light mix to use in the 3 litre pots to germinate and mid veg...

And im trying to find out a soil for transplant...

Yes the soil of 5.7 has a lot of flower on it...Its called Compo Sana and it is recomended from mandala seeds website...
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This soil you were using is for 4-6 weeks of young growth without adding in any fertilizers. Thats whats written on the bag and the company website.

If you're using mandalaseeds as a resource, they are GREAT organic farmers. They have lots of good information on their how to grow section of their website along with soil recommendations for the EU and the rest of the world as well.

They likely don't have a lot of reccomendations for fertilizers. They grow very similar to how we organic no-till farmers grow.

@Known I reccomend that you think over HOW you want to grow and not so much the small details on water and soil pH most of which we have not a lot of control over IN SOIL.

So if you want to grow with fertilizers you can grow in a soil-less medium and use fertilizer. Lots of growers here do that.

If you want to grow in SOIL - thats a great choice as well and better for the environment and your health.

Choose which way you want to grow. Its a personal choice.

I chose soil because thats all I've ever grown anything in.

Trying to grow in bagged soil with bottled nutrients is costy and also has a steep learning curve.


Known said:
Im using synthetic nutes + nitric acid for veg ph down and phos ph down for later bloom stage

I will provide nutes when i see signs of hungryness i guess
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Your using soil-less methods in a soil medium.

This is your challenge that and overthinking your pH thing.
 
That's a European thing. Our 5.7 is their 5,7 for some reason!
 
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This is the soil i used my last grow with very pleasing results...
I used my micro+grow+ph down phos @ 6.3 in VEG and changed to micro+bloom+ph down phos in BLOOM @ 6.5-6.8

Is this ^ soil or soil less? I dont understand the difference. What is the difference @bobrown14 ???

The slurry test i made, using zero EC water ph 7.8, before i use this soil (or soil less) was PH 6.8 EC 0.2 @ 23C

First watering when i put the seed inside the soil was phed 6.3, 0.3 EC plain water, 500ml in 3litre pots
Rewatered with nutes EC 0.3 + 0.3 water phed phos 6.3
 
Known said:
Is this ^ soil or soil less? I dont understand the difference.
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Soil is traditionally made mostly from humus, while soilless is made mostly from peat. That bag says it's made from peat moss, so I would consider it soilless. It has lime in it as a pH buffer as well as nutrients built in.
 
That bag says 5.5-6.5 so if you hit 6.0 you're right in the middle. Personally I don't pH adjust my water because my soilless mix is also buffered with lime, but most folks like to adjust it anyway.
 
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I have this in my grow room. Never got to use it tho...

The compo sanna (which is soil less, if there is no humus inside) has a very low ph around 5.7

How to use the lime to up the ph?

Can i bring the ph to 6.5 or it is out of my control?

Is there a method on how to add lime to soil...i mean the steps as to how to prepare the soil????

Also how long will it take to start raising the ph????

PLEASE please i need some answers on this, it is a life saver informations!!!!
 
You are working too hard. Don't start adding lime to your planting mixes, especially since they seem to already have lime in them. Work with what you can buy locally and see how your nutes work with them. Just pH your nutes to the low 6's and see how your plants do.

Why do you think you have some sort of pH problem?
 
Its alla bout the ph...Everything else is spot. Root zone temp 22-24, leaf temp 24-26, humid ok

I make slurry test to the soil i have the plants in my first post and its up to 7.1...

Plagron Light come out on 6.2

Compo sana 5.7

How to raise the soil with bi carbonate????

How to use my lime? How much time lime needs to buffer the soil ph??

PLEAAAAASE :)
 
How many different bags of soil are you asking us to diagnose? Do you not trust the manufacturers to make their soil correctly and you are trying to second guess them.

I'm not sure I understand what the problem is that you're trying to correct.
 
Save some time and water them both at 6.0. The one that slurry tested at 7.1 you can use for potted plants or toss it outside come spring!
 
I feel like I'm shopping with you at some giant soil store and you're pointing at all of the bags and asking about each one. I have to say I feel like I'm spinning my wheels here, and from the fact that most of the original responders have dropped out, it seems like I'm not alone.

I have given you advice on the two media you are growing in now, so take that advice or don't, but please don't ask us to evaluate every bag of soil you find.

I'll leave you with this: If you can find it, find a growing medium with no NPK value (one without pre-mixed nutrients). And find one that is buffered with lime, which the one you just posted is not. Doesn't matter if it's soil (humus) or peat based as they will both work fine.

If you can't find that, then use the two bags you have now, and when you have finished this grow, pick one and keep using it until you figure out how to maximize its potential.

:goodluck:
 
I dont get it really. Soilless must have a hydro ph. Then they throw lime in the soiless and that brings soilless ph around 7.

I really im confused. If you turn the soilless ph to neutral ph then you have to water it as a soil around 6.5?

Im sorry im just trying to understand how this things work together...

Thank you all for everything you pointed out to me
 
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