i have always kept biiiig CK's and Royals and find that with large CA cichlids and /or Arowanas, they pose no problem whatsoever.
Also, they are very easy ( in my experience, with one exception that fasted for a couple of months ) to put on pellets ( sinking ones ) Do not feed alive. It will only turn your life more difficult
Also, they are very easy ( in my experience, with one exception that fasted for a couple of months ) to put on pellets ( sinking ones ) Do not feed alive. It will only turn your life more difficult