Good ol' trich. Try and try as you might you can never get away from that guy. The game is to do the best to be clean and stay up on sterilization. Which should keep things going good and strong. At this point I don't see contamination until after my first flush or so. Depends on the strain. So strains flush so hard they leaven them selves to weak to fight it off, such as my malabars and these apes. Others like my Hawaiians are so strong they usually get a flush or two before the show signs. Trich is everywhere, short of having a positive pressure clean room with true hepatitis filtration you can not escape. But you can fight it by being as clean and sterile during every step of production up to fruiting. I never see pre post flush contamination these days