Sounds to me
@ChefGreen that you've done your homework and understand the scientific benefits and use of the Pro-tekt Silica. And indeed the silica will increase the amount of potassium at the root zone. The use of the appropriate amount of cal mag will balance things out giving your plants a very beneficial bump in silica that strengthens the plants stems, increases natural resistance to pests, fungal infections and makes the plant stronger to hold up the weight of the monster buds you'll be growing. I vote for using the Pro-tekt and cal mag when used together correctly.