hey all just wondering if anyone has used a product from nutrafin called B-clear biological water clarifier? i have used it for the last few months in my tank after water changes (we all know how nasty a p tank can look even after the gravel has been cleaned.) this stuff in my opinion is a miracle product, after i put it in the tank it takes like 1 hr and the water is crystal clear. before i used it my tank would remain cloudy for a day or two after water changes... so now my question has anyone heard of this causing harm to fish if it is after all water changes-every 1&1/2-2 weeks. it has not caused me any issues... so if i hear otherwise then this is something i would recommend if u have the same issue i did with water clarity.