ppm of nutrients vs ml/gallon
 

Hello all.

I want to add fulvic acid to the regimen i give my orchids at the rate of 125 ppm. The solution I will be using will have the following concentration: 0 - 0.14 - 0.09. Can someone give me the whole calculus method to transform that in ml/gallon?

Hmm, well I don't know the calculation but I would guess that it would be the same calculation as you would use for working this out for Nitrogen in fertiliser.

Take a look at Ray's calculator for Nitrogen to see if it helps. Take a look at the calculator at the bottom of the page.
Fertilizer PPM Calculator

Just curious, Vyltan. What does Fulvic acid do??

:)

What an awesome useful tool this is!
:biggrin:

Ray has a lot of very helpful information on his site :Tup:

In order to determine the amount of the fulvic acid to use, you have to start with knowing the molecular weight of the acid, but as it readily complexes with nutritional cations, that can vary all over the map.

Shirley,

I found about fulvic acid in an article by Wes Addison published in 2008 and reproduced in Big Leaf phalaenopsis forum. This is an exert from the article: 'During my research I also stumbled across Fulvic Acid. Fulvic acid is a part of the humic structure in rich composting soil. It is an acid created in extremely small amounts by the action of millions of beneficial microbes, working on decaying plant matter in a soil environment with adequate oxygen. It is of low molecular weight and is biologically very active. Because of its low molecular weight, it has the necessity and ability to readily bond minerals and elements into its molecular structure causing then to dissolve and become mobilized fulvic complexes. Fulvic acid usually carries 70 or more minerals and trace elements as part of its molecular complexes. These are then in ideal form to be absorbed by plant roots and interact with living cells. Plants readily absorb high amounts of fulvic acid, and maintain it in their structure.'

He finally state that he use it at a concentration of 125 ppm per gallon of nutrient solution he uses.

RosieC

thxs a lot for the link but it doesn't work. I would have to put half a bottle per gallon and the producer recommend 2ml per gallon for semi hydroponic culture...:(

Ok, well it was designed for Nitrogen, it was just an idea that it may have worked.

Ray said above that you need to know the molecular weight to do any sort of calculation. If any one here knows the calculation it would be Ray, I would go with the concentration you were recomended in that case.

The units are all over the place. It would be easier (and make more sense to me) to stick to metric units.

ppm = mg/l

You must figure the mg of active ingredient per ml of product. Then add enough ml of product to one liter to equal 125 mg/l of active ingredient. Then, if you want, you can multiply by 3.8 (or whatever the gallons to liter conversion is).