Yeah I used biobizz myself mate I used to use Canna but wised up to all this nutrient malarkey and do organics now and I am blown away with it, I have used their bio heaven and I the only thing i noticed it do was give the plants shiny healthy look to them but I seen no difference in the size of the Bud's tbh, certainly didn't see a 25% increase in yield Like someone is claiming here lol I am in uk mate and most of these companies are USA or Dutch so I'll probably have to pay postage anyway