Hi bredini. 👋 I have not used that specific brand but I have done my homework on silica. Looks more like a cal mag with a dose of silica.
Where to begin, monocots and dicots.Monocots and dicots differ significantly in their silica accumulation patterns. Monocots, like grasses and grains, are known for their high silica content 15-20% particularly in their leaves and stems. Dicots, on the other hand, typically have less silica 0.5%or may not accumulate it at all in their tissues.
Cannabis is a dicot.
While dicots can also benefit from silica, they typically don't accumulate it in their epidermal cells like monocots. Can't apply it foliarly. Silica is primarily absorbed by plants through their roots.
In my opinion and experience the benefits are far over exaggerated, 0.5% of silica will absolutely still be of benefit to your cannabis, but to me it's far more of a money grab certwi ly ahould not be paying for it, if you like silica in your grow throw in a bad of diamataceous earth and your good for the entire grow.
Having the tiny amount you need mixed with cal mag is probably perfect anyway, just don't buy into the hype.