OK Ive read somewhere where pleco cannot have salt at all. not even aquarium salt because it will cause them a painfull and slow death. due to it messes up there nerve system. i was just wondering because i have a black fin shark that once older likes to go to the ocean to spawn. so he goes nuts until you ad some salt in the tank. so my question is if i put some salt in there is my pleco going to die. thank you, fished