Who uses silica in their grows? I recently purchased some, npk of 0-0-3. I also purchased some new grow nutes npk of 9-3-6 to go along with my jack's classic blossom booster of 1-3-2...and botanicare's pure blend pro grow and bloom. The botanicare is supposed to be good for sativas and the other is an experiment on my next indica grow to see if lower levels of P help to reduce plant stretch. I also just got some alaskan fish fertilizer on sale at the grocery store for a couple of bucks and some container trays for like fifty cents a piece on sale, fits my one gallon grow bags great. I seem to have collected quite an arsenal of additives over the last year.
Anyway back to the silica. I see a noticeable difference in the girls in just over a week of using the silica. It's a liquid formula, I use like a half a dropperful per gallon. My plants are starting to get a nice sheen to them. I did a little reading before I bought it, it just seemed so beneficial I thought I would give it a try. I was using a product called rare earth, another form of silica, but it was a powder you mixed into your soil. I like the liquid much better. I'll also say this, even using the powder form, now that I think about it, none of those grows had any insect problems.