RAW Silica contains 45% Silicon Dioxide which is the highest concentration of silicon dioxide available to the home gardener. RAW Silica is flowable and suspend-able in water and naturally available to the plant. Since RAW Silica is a natural form of silicon dioxide, it is PH neutral and does not cloud when added to water. RAW Silica can be used during all stages of growth and bloom for optimal stem and cell wall strength. It is a beneficial supplement to all feeding schedules.
NPK RAW Silica is flowable - some dissolves and becomes immediately available to the plant and some gets trapped in the rhizosphere and is very friendly to microorganisms , even acting as a carrier for microbial innoculants.
Works in conjunction with all nutrient and feeding programs.
Have been using this product for many year. Pretty good
Great Cheap Silica Additive
just an FYI if you run this in the rez it will fall out over a couple days, but for hand watering or change outs 3-4 days it has been great, i have been using this for about a year and glad to say its a staple additive. I use every other change or watering.