I woke up this mourning to find all my fish dead and some on there way I did everything I know to save them check the water all was fine so i did a water change added carbn to all filters placed and extra protien skimmer on and they still died one by one all some of the fish I had in my tank dated back for 5 1/2 years my fish fish getting into this hobbie I am truely sad and dont know what happened my snowflak eel is alive and my hawk is fine thank God for that but al the rest gone only thing new was that I use kick ick because someone said it was good to prevent ick