OrionGirl said:Give the pleco some good greens--if he hasn't been getting them, could just be constipated. Squeeze some raw peas out of their shell, and put in for him.
Hope the others pull through. With any kind of ailment, it's tough. Compound that with multiple problems, and it gets tougher.
And yes, you're right that the salt will stay in the tank until removed by water changes.
I've been starving the pleco of greens for the past 3 days because I thought maybe the cucumber caused a problem in the tank. As of this morning, one red jewel was at the top of the tank looking for air. No sign of the other one. I had to go to work so I just let it be. I didn't see anything on the floor, so it's probably in there somewhere, hopefully not dead in the sunken gallion.