i bought at least 4 male bettas that were in water almost as bad at that and they all ended up dead after 3 or 4 days from some kind of fungus..i felt so bad for those poor little guys..i don't buy bettas in cups or bowls anymore..i did buy one about 3 weeks ago from pets supply plus and i tol the lady i wanted the red one in the tank with the neon tetras..she said that she had some nice ones in the cups..i said NO! i want the one in the tank..so i got him ..he's happy and healthy as ever....