Would like to ask some questions about disc healing at the Lich King Encounter. I know i am supposed to only shield people and use pom on this fight, maybe keep Grace up on a tank with penance. My question is cd of infest is around 20 secs ( not 100% sure on timer ) , during this time i am supposed to shield as many people as possible but on 25 man there is not enough time to shield 25 people , what i am doing so far is shield 3 groups with prio on ranged people and POH usually the healer grp leaving tanks. I do have some mana probs though with this tactic i usually go dry around the middle/end of p2 where my mana regen cd's have about 1 min or less to be usable again. With a drood innervating me i have no mana probs untill the end of p2 ( haven't gotten pas that so far).
Was wondering if this is the right way to go cause most of the times shields aren't absorbed completely and i keep shielding the same people again and again so rapture isn't giving me mana back. Also some times especially during transitions or defile + valkyrs i am forced to cast some other spells to help on tanks/raid thus resulting in less shields that might kill melee with infest runing oor from healers.
Would appreciate any tips. Also is it wrong to cast a flash heal or greater heal on a tank if neccesary or do i only and ONLY do shields during this encounter?
Cheers in advance.