For Your Pet Weekly Tips Click here for Previous Tips Friday, May 3, 2001. A tank full of fish offers a window through which you can observe nature in miniature. But fish are fragile. You'll need to spend time, money and energy to keep them alive and their environment healthy. Most tap water contains chlorine and ammonia which can kill your fish.
Uneaten food turns into toxins in the tank.
So feed your fish small amounts of food once or twice a day. Only feed them what they can eat in 3 minutes. Some fish are so fragile that a temperature drop of a few degrees will kill them, so get a quality water heater for your tank. Choose fish who require the same environmental conditions. Keep your tank out of direct sunlight and away from a heating or cooling source to avoid algae growth and water temperature fluctuations.