No bacteria yet. I'll get some of that floss. This is my first tank after a 2 year hiatus of keeping goldfish in one tank and livebearers in another.

I added the corys today after acclimating them to the water temp. They're going crazy, swimming everywhere, but staying together. I can't tell what the betta feels though. He seems curious about them at times, and other times stays away and hides. Is this normal when introducing new fish to a betta? This is the first time I've had a betta with other fish.

Please advise.