OK so here is the deal I got this fish tank from a great lady and everything was fine for the 4 months i had it until....i added two black mollies that I got from petco. Both those fish looked great in the tank at the store and thought they would be a great addition in my tank. Kinda like ninjas of the fresh water world. Two days later i look in the tank and noticed that one of them looked terrible. Sunk in stomach and almost looked like his body was coming apart. He's died that night. Over the course of the next couple days I had a clown loach pass over night. So I went to the lfs with my loach and they said I should treat for ick. I have done 5 days of treatment and two water changes, tested my water and all my numbers look good but many dragon goby is still looking like crap. And now my angel fishand a couple others have blood shot eyes. What the crap is going on. I won't want all my fish to die. Anyone have some words of wisdom. Sorry for the story but I'm just worried about them.