Hi all, recently my two platy fish died
So I'm thinking of getting some new fish, and I want to know what I should do to prepare my tank? My tank info is as follows:
Size: 10 gallon
Ammonia: 0.25 ppm
Nitrite: 0 ppm
Nitrate: 5.0 ppm
Time: set up last December
I have a Tetra Bio Bag filter, and I'm not sure whether it's a biological filter or carbon filter? And is my tank well established?