if your growing in soil, i use FF nutes, they just came out with a hydro and soil flush, it's called the Bushdoctor, it has a 2 part ammendment and a flush, the ammend are similar to AN Tarantula and their other micro nute mix, i forget the name, amyway, it makes better roots and colonies. also has a final flush, i am getting some tomorrow, the 3 pack, i'll post pics and info tomorrow, if u want to wait to flush till u get the info it won't hurt. i need to flush now also, but i've been waiting for the hydro store to get it. new product!!