Clint (veiltail betta) loves his ten gallon and it shows, I love watching him swim his little heart out. But he is being mean to the corys. He will flare his gills at one of them and push them, but doesn't seem to be attacking as so much just showing them who is boss. Of course the cory in question will dart off and Clint doesn't chase, he just swims away. Today I bought a new 20 gallon and will test it for leaks and then set it up, for the corys. Clint will have his ten gallon all to his little lonesome. Since the ten is already cycled I figure on using the sponge filter out of it to seed the 20g. Maybe even take a few of the silk plants and decorations, fake logs and such. My question is will this be enough to help seed the new 20 gallon tank? Because I don't plan on using anything out of the HOB filter.