I've used it in my current grow, when I was germinating the seeds I used to mix it wth the water and spray the root riot cube, and then when I transfered to vegging, I started using it in the nutrient tank for first two wks of vegging. Its my first grow and I've been growing in hydro...my plants are 4 wks into flowering and already 5ft tall and buds look pretty big see pic..

first pic are 5 colas on just one plant!!

second pic is a pic of all plants in the tent already hit the roof!!
peace:jointsmile: