I bought a new tank for my ghost shrimp, and set it up last week. But the water is staying cloudy despite a filter, even though it's just a crappy little filter that came with the tank (it's just a 2 gallon tank, small space). I have done 2 25% changes since setting it up. There is a moss ball and small java fern in with them. I know this is bothering me more than them, because they are active and seem quite happy but the water just isn't clear to my liking. I bought some Crystal Clear and the ingredients are water and tannin based cationic flocculants. Will this hurt my shrimp in anyway or should I just stop worrying about the cloudy water? I know clear water does not always equal healthy water.