If you got it use it but no need to use it every feeding i would add it second - 3rd feeding ..
But that is just me .. the product has been proven to actually help fight disease, and some other functions who ever thought chlorine is bad for plants yet its listed as a essential element
I add silicon to my water 1st and the ph reads between 8.8 - 9.2, I ph down to 7 and then add my nutrients. Rather than mix everything up and then ph it. Works extremely well