I have some white fuzz growing on one leaf of my Rotala Macranda is this bad? If so what do I do to treat it and or prevent it from spreading and/or happening again. Should i just cut the leaf or remove the plant?
Cut the leaf off. If it has algae growing on it, it more than likely is weak and will rot off eventually anyway. Since algae usually grows on weak plants, you might want to evaluate your Light - Co2 and nutrient balance.