I seem to have a really small output on Immerseus no mater what I do. Most fights in SoO I'm pretty comfortable with but Immerseus just feels weird to me. I try and stay close to the tanks to keep em shielded but with how big the room is I feel like I'm just out of range of everyone. Not sure if there's a good time to use Spirit Shell since most of the time everyone's so spread out I feel like I wouldn't hit many people with it. Adds I do fine on and my guilds last heroic kill I had the most add healing by a good chunk it's just the general rest of the fight that I feel lost.
So.... any tips for healing Immerseus as Disc with saving the L90 talent for adds?