The exceeded food causes the growth of algae, bacteria, parasites, viruses and other microorganisms, making the water less clear and full of bad odors. A UV light can clean the water up, keeping a ...
★【INVISIBLE BUT POWERFUL 365NM LIGHT】-- The 10W high power uv 365nm light is invisible to the naked eye, so that it is not as BRIGHT as the 395nm flashlight, but more perfect for demanding ...