Fulvic acid dosage

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papheteer

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So I got this fulvic acid that say 70%. If I wanna water with 100 ppm fulvic, how much powder do I put in a gallon of water? Thanks!!
 

cnycharles

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143 grams per 1000 liters.
This would make .143 g per liter or quart, or 4 x .143g per gallon or a big half gram
Which equals . 02 ounces

You might be better off putting 1oz into a gallon, then diluting it 50 times and then making a gallon mix with that
 

papheteer

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I think you got me wrong. I don't have a scale so I wanted to try and figure out how many tsp is 143 grams. Looked up various powders online for their gram to ml conversion but they vastly differ. I think I really need to buy a small scale.
 

cnycharles

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Ok; I've used cooking weight to volume conversion charts. Just think of a powder that has roughly the same density (either lots or little moisture which likely makes up most of the weight)
Probably corn starch or baking powder have near density to powdered fulvic acid. Cooking websites have weight to volume conversions for many cooking ingredients

Or you could spend more money and get a scale, but for such a small amount it's error factor may make it just as accurate as using a conversion table (or have to spend a lot of money to measure a very little amount)
 

gonewild

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You could probably assume that 1 gram is equal to 1 mililiter.

Making a stock solution is a good idea if you know the chemicals are stable after being mixed in water.
 

gonewild

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Or assume that one teaspoon is equal to about 5 grams.
It will be close enough unless you need to be exact with the 100ppm.
Probably all of your measurements will not be exact anyway.
The important thing is to be consistent and use the same amount each time then you can decide later if you want to increase or decrease the amount.
 

optimallyorganic

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I agree with lance 143 grams per 1000 liters is enough. I want to suggest one more thing you should read dosage directions carefully because every vendor does have their specification and overdosage can alter mineral levels
 

Ray

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This is where a TDS meter comes in handy!
IF you know the EC/TDS relationship of the product. Being an acid, I’d bet that the apparent TDS is a lot higher than the true TDS.
What is the function of adding fulvic acid I assume to water orchids?
It supposedly enhances nutrient uptake. However, as slow as orchids grow, I doubt it’s really of much benefit.

Many years ago I did an experiment adding it to the feeding regimen of some of my plants, but saw no difference from the ones I did not treat.
 
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