Review on 🐠 20Watt Waterproof Aquarium Water Clean Green Algae Clean Lamp for Pond Fish Tank Sump Pump by Dawn Mattheis

I don't know why this item is rated for transparency and brightness as all that matters is how effective this light is. I bought this light on a whim due to the heavy algae bloom in my aquarium. Light couldn't even penetrate 4 inches into my 100 gallon tank. It only took 48 hours to delete this flower. Very impressed with this little sterilizer.