definately psychoda,rhizome u the man..... Yes i do have a sewage plant near by,approx 1 mile.can i use hydrogen peroxide out of a hair bleacing kit and dilute it to sort my roots out as the decay is from two old roots systems of 2 plants that died in the same tray(i removed as much as i could,safely at the time)I think ive just found out what the worms are aswell....crane fly larvae,whats the damage with these little beasts? Will psychoda leave my heathy roots alone? and will hydrogen kill the above mentioned?Nice 1,guys.Thanks,RM.