I need some strong advice as I am new at this. I goofed up and put 3 guppies in an uncycled tank, and obviously they are hardy fish because they are not dead and it has been 4-5 weeks. I need advice on what chemicals if any should be added to this tank to get it under control. It is a 5 gallon tank with a biowheel I have added the water conditioner with each water change. The fish seem agitated (I would be if I were them too :mad2), one is always gasping for air, the small one is bullying the large one. Nitrates and nitrites have always been perfect. The ph has had problems stablizing; we have hard water. It spiked to 8.4 and then down to 6.2. The ammonia levels were off the charts. I did 20% water changes a few times but this barely improved anything. I have done 50% water changes the last two times (in the last 8 days), this seems better. Right before the last one, I was sure they were going to be gone in the morning. They were swimming erradically (more than they normally do) and then they would just fall into the rocks while in the middle of swimming or run into things. I took some of their plastic plants and rocks out so they would not continue to beat themselves up. Any advice would be greatly appreciated as well as a good reference book or website. I had wanted to completed clean their tank but because it was uncycled to begin with I was hesitant. Also can anyone tell me about the sludgy type stuff collecting on the filter pad. Is that something that should be cleaned off regularly or replaced?HELP!!!!