hey whassup man actually shooting powder isnt something you flush with. Its an extra bud stimulator, at the last 3 week of flowering you apply shooting powder to your nutrient and guarantee 20%-40% larger buds. And i back it up 100% i used it and my shit was like a ballon they were just bursting! and my nugs are so heavy now that i harvested....so you should try it. little advice..bro..http://www.humboldtwholesale.com/taxonomy/term/1 go to the link..get the number..call them tell them you what sample of there house & garden selection..u pay 12 buck shipping they send you 120$ worth of sample...serious...its the best shit in uk.they trying to bring it here..so they giving large sample sets to growers in the states..good luck man..get at me if you need info..