Is algae out of control in your tanks? We recommend fast growing duckweed to maintain water quality and control algae. This plant floats on the water surface and absorbs fish waste from the water. Grows quickly, oxygenates your water, and helps keep tank glass free of algae. Green plants in your aquarium help maintain overall water chemistry balance and can help protect fish from pathogens, bacteris, and parasites. A win-win-win plant. Does not require bright light, does not require fertilization, does not require CO2. You'll be surprised at the improvement in your water quality. About as easy as they come! We should note that all our plants are grown right along side our fish, not in some pond. This means our plants are coated in beneficial bacteria for your tank. These plants can help cycle your tank and provide a balanced environment for your fish.