Hello everyone! I'm new to this board but I've been reading posts here since I got my betta last year. My Princess Kate's old filter suddenly went dead so I bought a new filter to put in her tank. I took the old spongy part and stuffed it in with this new filter to help keep the nitrogen cycle.
My question is how long should I keep the old filtration material in there? I just tested the tank and the ammonia and nitrite were 0ppm. Should I wait a little bit more for more of the good bacteria to cling to the new filter?
I have the 3 gallon Tetra Crescent mixed with real and plastic plants. Don't worry, my fish is only a 1 inch little lady betta. Sometimes, I can't even find her in the tank.
Thanks for your help!