Silicon is very under rated it seems in the horticultural world. I always recommend it to my customers when they are having heat issues and they don't want to run co2. I usually recommend Silica Blast by Botanicare, only because that's what i use and i know it works from personal experience. i don't have heat issues, but from my personal experience, my stalks are just so much stronger when i use this product, and my buds don't fall over as fast like they use to prior to using it. i definitely recommend this product.