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EI DOSING USING DRY SALTS

Oldguy

Member
Joined
27 Aug 2018
Messages
412
Location
Gloucestershire, UK
I don’t think I can find KNO3. Can I substitute KCl or K2SO4 at the same teaspoon dose?
No, not really. You would be about right for potassium [K], but the plants would have no nitrates [NO3] which they need to grow. The beauty of KNO3 is you have two key ingredients in one chemical compound.

Try an internet search. You may find that KNO3 and other nitrates have become 'regulated substances'. They can still be purchased but the seller has to keep records of the purchaser. Internet sales will yield your name and address and a statement about age (over 18yrs usually works) and why you want the chemical - as a plant fertilize will provide the vendor with these details. All legitimate. Garden Centers take the easy way out and tend not to stock it. They try and sell a blended fertilizer for terrestrial plants which might contain ammonium salts or urea. Hope this is of help.
 

tdc999

New Member
Joined
19 Nov 2020
Messages
18
Location
Germany
Hi
I have found the article on dry salts very interesting if some what technical.
I am just starting out with this hobby and will be buying my first plants soon.
The tank is a 240L with a soil substrate.
I have found where I can purchase KN03 locally.
I cannot work out what else is needed to add to the KN03.
On page 1 there shows about 7 different pots of powders!
Also a clear measurement of how much to mix the powders would be great.
Apologies if this has been mentioned in earlier posts.
 

Zeus.

Fertz Calc Meister
Joined
1 Oct 2016
Messages
4,251
Location
Yorkshire,UK
The APFUK starter kit is a great place to start IMO even if you just buy the salts they advise locally, We do have a new fert calculator which is a bit technical for newcomers to fert dosing, but if you was after dosing at different levels for your tank than the APFUK instruction advise just do a post and I will post the amounts of salts to add to match the fert regime you wish to follow ;)
 

tdc999

New Member
Joined
19 Nov 2020
Messages
18
Location
Germany
I have been looking to buy the dry goods.
I would like to know about Plantex CSM+B.
Is this a mixture of KNO3, KH2PO4 and K2SO4?
Or is it added to these 3?
 

GHNelson

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14 Dec 2008
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Hemel Hempstead

dw1305

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UKAPS Team
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7 Apr 2008
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12,473
Location
nr Bath
Hi all,
I would like to know about Plantex CSM+B.
It is a <"trace element mix">, a mix of the elements plants only need in <"very small amounts">. Most people will use a very small amount of a molybdenum (Mo) or boron (B) containing compound and it just isn't worth buying even the smallest container of boric acid (H3BO3) etc., it would last them for all of eternity. I think <"CSM+B was just a commercial trace mix"> that was available at the time, any out of <"Yara Vita, Rexolin APN"> etc would do.
Or is it added to these 3?
You need all fourteen of the essential elements for plant growth.

The main one that has some additional issues is iron (Fe), where it needs to be <"chelated in harder water">, with differing chelators being better at higher pH values.

cheers Darrel
 
Last edited:
Joined
20 Dec 2019
Messages
459
Location
South Carolina
I have been looking to buy the dry goods.
I would like to know about Plantex CSM+B.
Is this a mixture of KNO3, KH2PO4 and K2SO4?
Or is it added to these 3?
Plantex is a mixture of micronutrients, and is mostly composed of Iron.

The salts below are all purchased individually-
KNO3: Nitrogen
KH2PO4: Phosphate
K2SO4: Potassium
 

Mrblo

Seedling
Joined
8 Jan 2021
Messages
8
Location
Aberdeen
Here is a sample of how the reference 20 US gallon tank could be dosed:

Sunday 50% or more Water Change then dose [3/16 teaspoon KNO3] + [1/16 teaspoon KH2PO4] + [½ teaspoon MgSO4]
Monday 1/16 teaspoon CSM+B
Tuesday - [3/16 teaspoon KNO3] + [1/16 teaspoon KH2PO4] + [½ teaspoon MgSO4]
Wednesday - 1/16 teaspoon CSM+B
Thursday - [3/16 teaspoon KNO3] + [1/16 teaspoon KH2PO4] + [½ teaspoon MgSO4]
Friday Rest
Saturday - Rest
Hi there!
@ceg4048 Great article, really enjoyed lecture and pictures!!!
I have a question. See this sample above. Is it me, or something is missing here? I think you'll struggling to get 30ppm (weekly) potassium with these rates.
I know there is potassium in KNO3 and KH2PO4 but I think you'll get "only" about 15ppm/week, if you don't add some KSO4.
Looking forward to hear from you, great job, once again! :clap:
 

ceg4048

Expert/Global Moderator
UKAPS Team
Thread starter
Joined
11 Jul 2007
Messages
9,482
Location
Chicago, USA
Hi,
EI is associated with CO2 injected tanks and it is the CO2 that is responsible for the accelerated growth rate. Plants are constructed primarily of carbon and they use the nutrients we dose to ensure healthy cells during that growth.
It is more accurate to say, therefore, that injecting CO2, depending on the amount added, increases the metabolism of plants by as much as 10X compared to non-added CO2 tanks. That will not necessarily increase the growth rate tenfold, as there are other factors involved, such as lighting and so forth.

The role of nutrients is NOT therefore, to increase growth rate, but to ensure that the plants are healthy and that they do not suffer malnutrition during the time they are assimilating the increased carbon. Nutrients and CO2 act in concert to foster rapid and healthy growth.

Malnutrition in plants, due to lack of nutrients, is characterized by cell death in important areas of plant metabolism, which weakens the plant, which damages their defense mechanisms and which then allows algal cells to attack. This is what we observe as algal blooms. Algal spores are always on the offensive but healthy growing plants are able to resist these attacks using various mechanisms. These mechanisms are constructed of proteins and other compounds that are themselves constructed of the raw materials found in the dosing powders. These include the macronutrients Nitrogen, Phosphorous, Potassium and the micronutrients, which are chelated metals, such as Iron, Magnesium and so on.
Another example of the use of these elements is in the construction of Chlorophyll and other light gathering proteins.

EI ensures unlimited availability of these basic materials that plants use to construct the compounds that keep them healthy.
To be clear, other dosing programs, or other dosing products have exactly the same compounds that we use, but they often contain much less, AND they are MUCH more expensive. One of the founding principles of EI is that the raw materials used here are dirt cheap, primarily because they are found...in dirt, which is where plants are usually found.

Hope this clarifies.

Cheers,
 
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