Well, as embarassed as I am, I have to admit I think it may have been a water problem. I was gone for the entire day, and when I came home, had one dead blue peacock, and one dead pleco. I immediatly did a water change and a vacuum. What else can be done. And NO, I do not have a tester to test nitrates, ect. All I have is the ph.. and it's around 7.8 This is the ph that my water has been for months, so I really don't think ph is the problem althogh u never know. I do not believe they were being bullied and there were no visable signs of fungus, ich,,ect. However, my yellow lab looked to be doing the funky chicken,,shaking, almost vibrating. I know this is a sign of something wrong. So, if it is my water, what can I do.. plz help.