It is only natural for a beginner to be scared to see a cloudy freshwater tank. In the first place, what is expected to be seen is clear water with beautiful aquatic displays and colorful fish swimming back and forth not some kind of dirt that obscures the supposed attractive serenity inside. There is nothing to be worried about for the most part but of course, it is certainly something that must not be ignored. It all depends on the color of the cloudiness. A white cloud usually indicates bacterial bloom which means increased bacteria suspended in the water. This can happen after days or months after initial aquarium set up. A green cloud or green water is an indication of algae blooms that is usually caused by too much waste in your aquarium. What happens is bacteria will convert this waste into nitrates which can