i recieved the same type of responses, when i recommended a past product that i used. Its a tank water clarifier that Coralife makes. I was experiencing cloudy water for a few weeks, and my guy recommended i use this. Basically, all it does is clump up the particles that are too small for your filter to filter out, making it easier to filter. People jumped all over me here, saying that i was stupid for using that, and how i can expect my fish to die.