just put mine into flowering 3 days ago bro, cant wait til yours starts, i used miracle grow bloom booster on day 1, but im ordering a sample pack from Advanced Nutrients for 22 dollars plus tax that is enough to do two full flowering phases, if you water every other day, which i water every 3 days myself, and only every other watering do i add fertilizer, so maybe you might wanna check that stuff out, it will do alot more than the miracle grow and its not that expensive.