*sigh* So I've set up a new tank which has been cycling for a week now. On the heater there is some white fluffy white stuff growing. Its also showing up on a log ornament in patches. I suspect its either mold or algaebut I'm not entirely sure. When I feed my fish I give him three pellets and watch him eat it just to be on the safe side. I've done small water changes as well. But now there is an odor coming from the tank. Should I be doing 20% water changes instead of 10%? And should i be doing it every two days instead of every three?