Recently got a pulsing Xenia and bought it online so I am unable to return it. Just thought I should take a look at if they had toxins, and a number of websites and articles tell me that I should have been dead an hour ago. Can anybody help clarify this? So many news sites say they're deadly, but the news says what makes a good story. Is this going to kill everything in the tank, or me? Is it the same with all species of Xenia?