potassium sulfate in water for fertilzer

esh dov ets

esh dov ets

Well-Known Member
how to use? how to mix in consentrated solution with water or with a gal for feeding?
i thought k2so4 was water soluble but i get paste or silt seperation right away like it's only partially soluble .i think k2so4 is 0-0-50 and i want to apply it with my watering at 5-10ml of 10-20% to a gal or something. i thought i could mix 10 tsp in 80ml of water to get 100ml of 10% but it dosen't stay mixed so i addes 400ml h20 for 5% but it still won't stay mixed.
 
Chunky Stool

Chunky Stool

Well-Known Member
esh dov ets said:
how to use? how to mix in consentrated solution with water or with a gal for feeding?
i thought k2so4 was water soluble but i get paste or silt seperation right away like it's only partially soluble .i think k2so4 is 0-0-50 and i want to apply it with my watering at 5-10ml of 10-20% to a gal or something. i thought i could mix 10 tsp in 80ml of water to get 100ml of 10% but it dosen't stay mixed so i addes 400ml h20 for 5% but it still won't stay mixed.
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I often add K2SO4 to 5 gallon buckets of nutrient tea. It is added right before I use the tea and is already dissolved in a separate container @ 5ml per liter of water.
I've never tried to mix it stronger because it already takes a while to dissolve.
 
esh dov ets

esh dov ets

Well-Known Member
i have to add about 800 ml to 10 tsp or aprox 70 g of k2so4 and shake to get most of it to disolve. so i can't make it as concentrated as i want but can use it. any body know how i could use it dry?

Potassium sulfate is only one-third as soluble as KCl, so it’s not as commonly dissolved for addition through irrigation water unless there’s a need for additional S.

Several particle sizes are commonly available. Manufacturers produce fine particles (smaller than 0.015 mm) to make solutions for irrigation or foliar sprays, since they dissolve more rapidly. And growers find foliar spraying of K2SO4 a convenient way to apply additional K and S to plants, supplementing the nutrients taken up from the soil. However, leaf damage can occur if the concentration is too high
potassiumsulfate-chemprop.jpg
 
esh dov ets

esh dov ets

Well-Known Member
Chunky Stool said:
I often add K2SO4 to 5 gallon buckets of nutrient tea. It is added right before I use the tea and is already dissolved in a separate container @ 5ml per liter of water.
I've never tried to mix it stronger because it already takes a while to dissolve.
Click to expand...
so how much k2so4 are you disolving into how much water at a time? you then mix that solution with you irigation water or in tea ..do you dilute the tea to apply? how much solution is mixed in to your feed water and how much k2so4 is in the solution you mix?
 
Chunky Stool

Chunky Stool

Well-Known Member
esh dov ets said:
i have to add about 800 ml to 10 tsp or aprox 70 g of k2so4 and shake to get most of it to disolve. so i can't make it as concentrated as i want but can use it. any body know how i could use it dry?

Potassium sulfate is only one-third as soluble as KCl, so it’s not as commonly dissolved for addition through irrigation water unless there’s a need for additional S.

Several particle sizes are commonly available. Manufacturers produce fine particles (smaller than 0.015 mm) to make solutions for irrigation or foliar sprays, since they dissolve more rapidly. And growers find foliar spraying of K2SO4 a convenient way to apply additional K and S to plants, supplementing the nutrients taken up from the soil. However, leaf damage can occur if the concentration is too high
View attachment 4012988
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I avoid spraying anything on my plants during flower. The only exceptions would be potassium bicarb if there's a mold/mildew outbreak, or mighty wash to control spider mites indoors.
 
esh dov ets

esh dov ets

Well-Known Member
Chunky Stool said:
I avoid spraying anything on my plants during flower. The only exceptions would be potassium bicarb if there's a mold/mildew outbreak, or mighty wash to control spider mites indoors.
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i want to water it in. i might foliar a couple times early with fulvic but tend not to foliar feed or spry unless needed
 
Chunky Stool

Chunky Stool

Well-Known Member
esh dov ets said:
is that like 1ml of 0-0-42 per gal or 5 ml of 00-4 per gal
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Not sure. I was told that 1/4 tsp per gallon was the proper rate, and I don't fill my 5 gallon buckets all the way -- more like 4 gallons.
So to sum it up, I wing it. Rate is approximately 1 tsp in 4 gallons. :eyesmoke:
 
esh dov ets

esh dov ets

Well-Known Member
1 tsp = 5ml = 7 g
k2so4 = 0-0-50
1 added 10 tsp to 1L

is that 1% 0-0-50 \ 0-0-5 ??
or is it 20% 0-0-50 ?? \ 0-0-10
i don't have the formulas


and chunky stools would be 1 tsp to 1l 0-0-0.5 ?? added at 100-125 ml per gal / aprox 1ml 0-0-50 per gal
 
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esh dov ets

esh dov ets

Well-Known Member
xtsho said:
Why are you adding Potassium Sulfate? Do you have a potassium deficiency?
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i want to add sulfur and canabis can use alot of potassium during bloom. the only negitive symptoms are slight yellowing of lowest leafs and i slight lightness of green of growth tips. iron helps the growth tips and the olwerleafs yellowing and falling off could be from low n or a k def as k doesn't tend to stick around . it's in sort of super soil. they don't get fed but maybe every 3 months most plants look exelent. i just want to give a boost as it's about time to add and i don't want to add long lasting powders atp while in bloom.
 
ruwtz

ruwtz

Well-Known Member
K is commonly thought of as the "quality" element and will improve overall plant health. I've found it very hard to overdose, especially late into flower.

Sulfates are widely understood to improve terps and resin productions.

95g of K2SO4 per quart gives you a stock solution that at 5ml per gallon will deliver 81ppm of K.

Add in 1/2tsp dark brown sugar and you have yourself an equivalent brew of Terpinator, and I vouch for it 100% (thank you @Dr.Who).
 
esh dov ets

esh dov ets

Well-Known Member
ruwtz said:
K is commonly thought of as the "quality" element and will improve overall plant health. I've found it very hard to overdose, especially late into flower.

Sulfates are widely understood to improve terps and resin productions.

95g of K2SO4 per quart gives you a stock solution that at 5ml per gallon will deliver 81ppm of K.

Add in 1/2tsp dark brown sugar and you have yourself an equivalent brew of Terpinator, and I vouch for it 100% (thank you @Dr.Who).
Click to expand...
awsome. my brain isn't working 100% today and i don't do ppm yet. you are saying 95g per quart = a concentration that when 5ml is added to a gal the water will be 81ppm. is that good to waer in soil or is thank for a hyro tank? what would the quart solution be in 0-0-0 ?
 
esh dov ets

esh dov ets

Well-Known Member
i added 70g to a L so made a simalar concentration but added 20ml to each gal w\ 7ml 1-4-5 and a light dose of micros and fulvic 0-3-1 6ml kelp and a full dose of aminos then watered lightly then added a pich of fish powder 11-0ish-ooish to the soil and finished watering. it's in an incomplete super soil that gets ocasional dry or liquid fert.
 
esh dov ets

esh dov ets

Well-Known Member
the mix and solution went well. i add aboul 5ml per gallon now and i need to mix more. i want to figue this out.
 
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