Goldfish lover
Aquarium Advice Apprentice
Hey everyone. I have been keeping fish for 5 years now, but I wanted to make sure that I am doing things right. Some questions are: How often do I change the carbon filter, How to keep the beneficial bacteria alive and not accidentally kill them off. What to clean, and not what to clean. I have been doing the water changes every two weeks, is that bad to do. I also have a aerator for the tank. Is there anything special I should do with goldfish? Also I have four goldfish in a 55 gallon tank, and i was also wondering if I could add more to the tank. Thanks.