I got a pm about this fight today.... I'll add what I know.
8 channelers to start. Kill them all within about 5 min to prevent them repoping once all dead within time limit Ralkor stands up and attacks. At the same point The first "add" becomes active. It goes in order that you face them in the instances. Safest bet is kite Ralkor. Burn down the named add. Once it dies clear any adds it spawned, then pull and engage ralkor. Every 10% you get a new named or nameds. How you handle it is up to you. But.
I'd suggest putting your ralkor tank team in the healing aura(the auras around the room) and healers in the mana regen one. Leave knights to tank the adds. Set at 90% is 2, the balancer mobs. Burn them both evenly.
80% next adds and so on. After the balance one you can kite one burn one.
On the stonefire / stonethunder one. Burn all discs on stonethunder, then stonefire. Making sure people know to move from the mean auras.
At 40% Crazok wakes and attacks, he's the last add. Kite him, burn ralkor down then kill crazok for the win.
Not a hard fight if you can heal a few tanks at once. Specificly the tank on ralkor since ralkor hits like well, a tier 3 mob.