How you mix silica depends on what you’re trying to achieve. If you want to make a liquid concentrate, mix 125 grams of Agsil 16H Potassium Silicate per 1 gallon of RO or distilled water. Use this liquid concentrate at 4ml per gallon in both the vegetative and blooming stages of growth. Adding this potassium silicate concentrate to your nutrient solution will increase your Potassium (K) levels +35 PPM.
If you want to add the potassium silicate powder directly to your reservoir, use it at 0.5 grams per gallon in both the vegetative and blooming stages of growth. When preparing any nutrient solution with silica, it’s important to always mix silica in as the first ingredient. Make sure all of it is fully in solution before adding anything else to the reservoir. Potassium silicate is a known cancer causing carcinogen if inhaled. Wear protective gloves and a proper dust mask when using or mixing powdered silica.