Awesome. I'm glad it's working out. There are only a couple of additive products that I can point to and say with a degree of confidence "I think that really works". Silica is one of those. My biggest advice on it: is that you add it last amongst any additives, then PH your reservoir before adding your base nutes (for example the Blue Planet 3 part nutes). Silica really causes a huge spike up in PH when you add it, and balancing the PH before adding the nutes might keep something from "falling out" due to some crazy high PH in the res.
My findings, (I use a 20 gallon reservoir so mileage may vary), is that if I can PH my reservoir after Silica to about 6.1 or 6.2, then add nutrients, it ends up around 5.6 to 5.7 or so PH. I don't always PH again after I add nutes as long as it was at about 6.2 or so before adding nutrients, because in my res it'll always end up in a good spot after the nutrients (BPN 3 part). If that makes sense!
Oh, and how cool that the Peanut Butter Kush smells like "Skippy"!