GT Silica — Growth Technology New Zealand
Mix up to 5mls GT Silica to 1 litre water to maintain 20ppm silica. Although the second most abundant element in the earth's crust, a component of most rocks, the concentration of silica in soil water is not that high (rocks don't tend to be all that soluble). Silica concentration in soil water generally doesn't get above 20ppm, the level ...