I would be concerned about the small brown squiggly worms. I have the white planaria worms in one of my tanks but I had a flower in a 75 gallon and I fed some feeder fish to a pbass in the tank. The ray ate some as well. Two days later I had a brown worm outbreak that took my tank over. The flower stopped eating started gasping and then died. Still to this day I have no clue what happened. It came out of the blue.