Well, I got up this morning turned on the tank light and my tank is so cloudy I could hardly see the fish. I checked all my levels and everything seems to be doing good. The ammonia is up alittle but not a dangerous.(.20ppm) The tank has ben up an running for about 5 weeks now. Is this normal or should I do a water change? Did a 30% water change yestuday and I lost a fish