Clear sight Removes mineral cloudiness Removes the main algae nutrient phosphate For lastingly crystal clear, clean water Mineral as well as dead organic material (detritus) may cause annoying cloudiness of the aquarium water. The latter can additionally increase the phosphate level in the water and thus support algae growth. sera phosvecclear immediately binds the cloudiness and makes them collectable by the filter. At the same time, it removes excess phosphate and thus prevents excess algae growth. For lastingly crystal clear and clean water.