Old filter media for cycling
I want to use an old sponge to try and speed up the cycle of a new tank.
Do I just take the sponge and throw it in (I don't have a pare filter, so I can't just move the entire filter), or do I have to rinse the spinge out first?
Should I move the sponge around the new tank, squeeze it out or just let it sit there? And how long should it be in?