i have a problem. when i have the water ring equipped, jenova doesn't use aqualung. i waited for jenova to use it for about 10 minutes and eventually it said something like "jenova-LIFE has ran out of skill power"
i have about 1500 HP and aqualung does 1550 damage. so i'll have to unequip some materia so i can survive aqualung and learn it as an enemy skill.