Quote Originally Posted by Mellaus View Post
(...)Big heal when needed, when your tank is around 60% health for instance (don't wait for him to be at 10% health).(...)
just wanted to add that in some cases big heals can also be saved for a certain event like a specially boss attack (not all fights), and another thing, be careful not to throw the big heal at the same time has the other healer or tank gets none for a very long time (usually the group leader says an order of those heals to avoid problems, mainly on raids)