Unsightly algae is the curse of an aquarium whether it is well planted or not. Products claiming to be algae killers may kill the plants as well. The dilemma is solved by Aquasonics Algicide, a broad spectrum algae treatment for freshwater aquariums that controls many types of annoying algae but is gentle to aquarium plants. Aquasonics Algicide will not affect aquarium plants or fish, provided it is used according to dosage.