DIY Nutrients formulations, recipes, chemistry etc.

[sunset limited]

i feel like people actually used to read this thread and post answers here. just looks like a long list of unanswered questions lately.

 

[SecondAttempt]

I mixed 150 grams in a gallon of water and use 1.5 ml per gallon in the res with success... I forget how I did the math but been doing it that way for awhile. If I remember the math I'll post back later. I do believe there was a method to my madness, there almost always is.

 

[N-P-Kali]

i want to mix up agsil 16 at the same strength as silica blast.

the agsil label states that .7 grams in one gallon of water yields 98ppm SiO2 or 46ppm Si.

the silica blast label states that 5 ml / 4 liters of water yields 105 ppm of silicate.

converting 4 liters to gallons is the easy part. here's my question though. that 105 ppm of silicate—does it refer to elemental Si or to SiO2? without that information, it's pretty tough to figure it. the bastards at botanicare won't reply to my emails or return my calls.

anyone out there in cyberland that can set me straight on this one?

It refers to silicon.


calculation is as follows;


Molecular weight of silicon/Atomic weight of AgSil16 =
target concentration mg/L (ppm)/X


Molecular weight of silicon =28.086 mg
Atomic weight of AgSil = 154.28 mg
Target concentration = 100 mg/L

28.086/154.28=100/X : Cross multiply

28.086X=154.28 x 100
28.086X=15428
X=549.313mg/L of AgSil16 will give 100mg/L (ppm) of silicate.


If your volume to be mixed is 4 Liters the you would multiply 549.313 mg X 4 Liters = 2197.25mg or 2.197g

Hope this helps

 

[sunset limited]

so just under a pound (446 g) per liter to reach the concentrated strength of silica blast.
not saving that much cash doing it this way.

 

[YosemiteSam]

If the silica blast label refers to Si why does it say silicate? Just curious.

 

[plastochron]

It refers to silicon.


calculation is as follows;


Molecular weight of silicon/Atomic weight of AgSil16 =
target concentration mg/L (ppm)/X


Molecular weight of silicon =28.086 mg
Atomic weight of AgSil = 154.28 mg
Target concentration = 100 mg/L

28.086/154.28=100/X : Cross multiply

28.086X=154.28 x 100
28.086X=15428
X=549.313mg/L of AgSil16 will give 100mg/L (ppm) of silicate.


If your volume to be mixed is 4 Liters the you would multiply 549.313 mg X 4 Liters = 2197.25mg or 2.197g

Hope this helps

You calculated the amount of AgSil required to achieve a concentration of 100 ppm Si, not SiO2. Most of the labels report Si in terms of SiO2, and I believe that Silica Blast is no exception. Replace the 28.086 g/mol with 60.08 g/mol to make calculation based on concentration of silica instead of silicon.

 

[shaggyballs]

i want to mix up agsil 16 at the same strength as silica blast.

the agsil label states that .7 grams in one gallon of water yields 98ppm SiO2 or 46ppm Si.

the silica blast label states that 5 ml / 4 liters of water yields 105 ppm of silicate.

converting 4 liters to gallons is the easy part. here's my question though. that 105 ppm of silicate—does it refer to elemental Si or to SiO2? without that information, it's pretty tough to figure it. the bastards at botanicare won't reply to my emails or return my calls.

anyone out there in cyberland that can set me straight on this one?

http://mbferts.com/Agsil-16H-Potassium-Silicate-Soluble-Silica-Powder-1-Pound-545.htm

With mixing instructions

 

[sunset limited]

i got a 5# sample of agsil from the manufacturer.

tried mixing it in my res at 2g/gallon. it formed a gelatinous head in my res that wouldn't go away.

i tried predissolving it instead, but it turned into a solid block with the consistency of dried caulk.

something's clearly wrong with a. the concentration, and/or b. how i'm administering it. thoughts anyone?

 

[BasementBreeder]

i got a 5# sample of agsil from the manufacturer.

tried mixing it in my res at 2g/gallon. it formed a gelatinous head in my res that wouldn't go away.

i tried predissolving it instead, but it turned into a solid block with the consistency of dried caulk.

something's clearly wrong with a. the concentration, and/or b. how i'm administering it. thoughts anyone?

Well, I just mixed a gallon of stock solution that included ~60g of agsil. It completely dissolved for me so I doubt concentration is the issue.

What's the pH of the res? the temp?

 

[Avenger]

The dilution fomula is:
Concentration(stock) × Volume(stock) = Concentration(dilute) × Volume(dilute)

So:

52.8 x ?? = 2 x 3785.41

x= 143.39

to make a gallon of concentrate from the AgSil 16H that is equivelant to the 2% SiO2 of the Silica Blast, you add 144 grams AgSil16H to 3 quarts of water mix it well then top it off with water to a final volume of one gallon.

That is assuming the silica blast is 2% SiO2 not 2% Si.


My question is how the fuck do you get 105 ppm of anything from 5 mL of a 2% concentrate in one gallon of water?

2% = 20,000ppm

20,000/1,000=20ppm per mL

20 x 5 = 100 ppm from 5 mL

but if you dilute that 5 mL that contains 100ppm in one gallon you get 26.5 ppm

 

[N-P-Kali]

You calculated the amount of AgSil required to achieve a concentration of 100 ppm Si, not SiO2. Most of the labels report Si in terms of SiO2, and I believe that Silica Blast is no exception. Replace the 28.086 g/mol with 60.08 g/mol to make calculation based on concentration of silica instead of silicon.

I don't believe this is correct. Maybe a bit more research would help.
Silicon is available to the plant in Ionic form only, like all other cations and anions. The dioxide base goes away so to speak when the SiO2 is dissolved in water. You can calculate it that way but you will need to remember half of the weight in (milligrams) is not available in the plant. Its effectively the long way home.

Close but it is not grams/mol it is mg/mol.




hey avenger,

If silicon was 3.5 times its normal atomic weight (28.086mg/mol x 3.5) it would yield 100ppm
from 5ml/gal diluted from a 2% stock.

Lets start using mg/L instead off ppm to measure concentration that would help clear up any confusion.

 

[Avenger]

I'm not following your point with regard to 3.5 times its molar weight.

Is there a mistake in my thinking or math?

It looks to me like the mistake is on the silica blast label instructions, as it should say 5 mL per liter gives you a concentration of 100 ppm (mg/L).

 

[N-P-Kali]

@Avenger It was a Geek Joke.. I wasn't poking fun or disrespecting, just saying hypothetically in response to your query.

What I meant was, IF Si was 3.5X its normal weight of 28.086mg/mol, then 100mg/L from a 2% stock solution diluted at 5ml/gal would be possible. But its not. Sorry I'm socially awkward.

Your math looked good from here.

 

[sunset limited]

Well, I just mixed a gallon of stock solution that included ~60g of agsil. It completely dissolved for me so I doubt concentration is the issue.

What's the pH of the res? the temp?

standard conditions.

The dilution fomula is:
Concentration(stock) × Volume(stock) = Concentration(dilute) × Volume(dilute)

So:

52.8 x ?? = 2 x 3785.41

x= 143.39

to make a gallon of concentrate from the AgSil 16H that is equivelant to the 2% SiO2 of the Silica Blast, you add 144 grams AgSil16H to 3 quarts of water mix it well then top it off with water to a final volume of one gallon.

That is assuming the silica blast is 2% SiO2 not 2% Si.


My question is how the fuck do you get 105 ppm of anything from 5 mL of a 2% concentrate in one gallon of water?

2% = 20,000ppm

20,000/1,000=20ppm per mL

20 x 5 = 100 ppm from 5 mL

but if you dilute that 5 mL that contains 100ppm in one gallon you get 26.5 ppm

View Image

where'd you get the snazzy calculator?
and when will there be more agsil in stock?

 

[plastochron]

double

 

[plastochron]

I don't believe this is correct. Maybe a bit more research would help.
Silicon is available to the plant in Ionic form only, like all other cations and anions. The dioxide base goes away so to speak when the SiO2 is dissolved in water. You can calculate it that way but you will need to remember half of the weight in (milligrams) is not available in the plant. Its effectively the long way home.

Close but it is not grams/mol it is mg/mol.

Molecular weight is described in units of g/mol, not mg/mol.

Plants take up and transport Si as monosilicic acid (aka orthosilicic acid) not in ionic form.

This free publication is a good start for anyone trying to inform themselves about Si:

http://www.aseanbiotechnology.info/Abstract/21019928.pdf

The solubility and concentration of Si is usually described in terms of silicon dioxide (aka silica). The max solubility of silica at relevant temp and pH values is a bit over 100 mg/L (ppm). I believe that at concentrations above the max solubility of SiO2 some of the orthosilicic acid will polymerize to become polysilicic acid.

 

[N-P-Kali]

Molecular weight is described in units of g/mol, not mg/mol.

Plants take up and transport Si as monosilicic acid (aka orthosilicic acid) not in ionic form.

This free publication is a good start for anyone trying to inform themselves about Si:

http://www.aseanbiotechnology.info/Abstract/21019928.pdf

The solubility and concentration of Si is usually described in terms of silicon dioxide (aka silica). The max solubility of silica at relevant temp and pH values is a bit over 100 mg/L (ppm). I believe that at concentrations above the max solubility of SiO2 some of the orthosilicic acid will polymerize to become polysilicic acid.

Thank you for the correction.

 

[Avenger]

snazzy calculator
valentines day

 

[Loky]

Nutrient list from Haifa

Nutrient list from Haifa

Which of these nutrients would be good for grow in hydro mj? (grow and bloom)

Nutrient list Folow the link from the table to see more detalied info.

 

[shaggyballs]

Mixing bacteria and fungus powder?

Mixing bacteria and fungus powder?

Mixing bacteria and fungus powder?


The fungus powder I have is:
Trichoderma Harzianum Rifai Strain T-22.

I also have Bacillus Bacteria Species with a ratio of 4 billion CFU’s per gram.
Bacillus Subtilis sp. 1
Bacillus Subtilis sp. 2
Bacillus Subtilis sp. 3
Bacillus Subtilis sp. 4
Bacillus Polymyxa
Bacillus Licheniformus
Bacillus Amyloliquefaceans
Bacillus Thuringensis

So I would like to learn how much per gallon to add for a concentrate and per gallon in the rez.



I am in DWC .