Sorry, haven't been on in a while, so I realize my response is long overdue, apologies! My tank is doing quite well. Honestly, I gave up trying to figure out where the dinos came from. In part, I am convinced that every tank has dinos in a dormant state, just waiting for the conditions to be right before blooming or exploding. In my case, I BELIEVE it was a combination of factors....die off, moving rocks around stirring stuff up, low alk, etc. I turned my focus to getting rid of it in any way possible before it destroyed my tank and everything in it.