Recent content by fishyquestions

The guy at the petstore told me that I should use aquarium salt whenever I am changing the water. Three of my fish died last week so I suppose it was the sudden change of temperature. I have since unplugged the heater because I feel like that was causing all of the problems and now the fish are...

I did a water change on sunday but I only changed a little over 25% of the water and used dechlorinator. I havent tested my water because I don't have any way to do that. My heater is 100 watts and I don't have one of those thermometers. Also what does it mean for the tank to be cycled? I waited...

Its one of the ones that adjusts automatically. There are no buttons on it or anything to change the temperature.

So I have a 20 gallon tank that I've had fish in since October. I haven't gotten a heater until 2 days ago and all of my fish were doing fine without it. Now that I have one activated the fish all just float without swimming and there are large clusters of bubbles all around the top of the tank...