I have had a hammer coral for over twelve months now and the past 6-8 months have noticed flat worms eating around the gummy tissue at the base of the polups. I have coral dipped it several times hoping to stop any tissue necrosis and also physically remove the worms. Still I get the flat worms...Any ideas on how to keep the hammer healthy? Its my second hammer I have owned and didnt have any success with the first one as I was only starting out as a beginner. Now been in the hobby for only 2 years.