Kingdom Hearts II help

Ok, first, equip your strongest equipment to Sora, your second strongest equipment to Donald, and your third strongest equipment to Goofy. When Demyx summons his Water Clones and that seemingly impossible ten second rule appears, grab a Water Clone and run to the area where there is the most water clones and destroy them all, accuracy is important! Once you defeat his Water Clones, he will attack you with his Water Pillar Spell things, these are hard to evade, so be ready to Cure yourself or use Potions/Ethers. This boss isn't that difficult to defeat once you have mastered those two attacks, just attack him physically or transform into Valor or Wisdom Form to amplify the power of your attacks/attack with projectiles. Does this help? If it doesn't, feel free to PM me, hopefully I'll come up with something...