oscar169
Farming 🌱
Supporter
- 2,729
- 263
I do not make decisions based on water readings from an EC meter after I put stuff in water. So, it's a real number and not an interpolated number based on a reading.
If we were to compare:
AgSil16H, which is 52.8% SiO2 and 26.9% K (32.4% K2O), I would add 94.7 mg/L to get 50 ppm of SiO2. This would also add 25.5 ppm K. Total dissolved solids added to solution = 75.5 ppm.
AgSil21, which is 26.5% SiO2 and 10.5% K (12.4% K2O), I would add 188.7 mg/L (0.137 mL/L) to get 50 ppm SiO2. This would also add 19.8 ppm K. Total dissolved solids added to solution = 69.8 ppm.
BromleyAg Monosilicic acid, which is 28% silica, I would add 178.6 mg/L (0.155 mL/L) to get 50 ppm SiO2. Total dissolved solids added to solution = 50 ppm.
Now, in regards to the mix shown earlier in the thread. 148g/L of AgSil16H. This will create a solution that is 78,144 ppm SiO2 and 39,812 ppm K. So, the Weight/Volume % is 7.8% SiO2, not to be confused with liquid products like AgSil21 or BromleyAg's Monosilicic Acid which are listed as a Weight/Weight%, as is the case for all fertilizers regardless whether they are liquids or solids. Right, so, we have a 78,144 ppm solution of SiO2. To get down to 50 ppm SiO2, we divide 50/78,144 and then multiply that by 3785 mL/gal to get 2.42 mL/gal concentration. Total added solids = 75.5 ppm. Feel free to use this dilution calculator to double check my work: http://www.endmemo.com/bio/dilution.php
2.5mL/gal should give you 51.6 ppm SiO2 and 26.3 ppm K for total added solids 77.9 ppm.
Here you go. This is 2.5 ml to gallon
Last edited: