Sometimes, we can judge the fish tank from the fish's behavior, but it's not a always working way because there is something we can't judge by our eyes.

As a new fish breeder, after keeping fish for a period of time, you find that the fish in the tank appear lying on, loss of appetite, slow movement and other lethargic performance, then your fish must be ammonia poisoning.

It means it's time to tank the ammonia out of aquarium. But how to do it effectively? This blog post is helpful to solve this problem. It's a long article and I post it below:

How to take the ammonia out of aquarium.