PlantGuy's Potassium Sulphate- K2SO4 (500g)
To make a typical stock solution add 55g of dry K2SO4 powder to 500ml of RO or distilled water and then add 40ml of this per 100L of tank. This will give you a value of 20ppm (20 mg/l). You would dose 3 times a week when using the EI method.
- Adding potassium sulphate at the rate of 0.011g per litre to a tank will increase the potassium (K) level by 5ppm.
- Example commercial product is 'Sulphate of Potash', a common gardening fertiliser. Typically says it contains K2O (Potassium oxide). But it's really Potassium sulphate
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