Product DescriptionTetra Algae Control is formulated to remove unsightly algae fast from your aquarium This liquid formula effectively combats aquarium algae and also works to prevent it from returning This formula is highly effective against algal blooms that cause green water and works against algae that grow on glass and décor such as blue-green algae (oscillatoria) diatoms ?brown algae? (synedra) hair algae (spirogyra) or blanketweed (oedogonium) Safely use Tetra Algae control in planted aquariums The precision dropper helps you administer the proper dose to your aquarium One drop treats one gallon of aquarium water Before applying Tetra Algae Control first remove as much algae as possible by cleaning the glass and décor This allows the product to be most effective at reducing the remaining algae and inhibiting new algae growth Remove activated carbon filters for 6 to 8 hours after dosing Be prepared to clean out additional algae as it is killed to prevent deterioration of water quality See product label for complete directions for use Since 1951 Tetra has developed the world?s most comprehensive body of fish food knowledge and fishkeeping enthusiasts have looked to the brand for products and solutions that add ease and beauty to their home Whether you're an experienced hobbyist or just starting out Tetra has everything you need - from a large variety of quality fish food and innovative equipment to test kits and decorAmazon.comBroad Spectrum Algae Control:Tetra Algae Control works to combat algae and new algae growth in your aquarium. This highly effective formula is effective against green water (algae blooms), bluegreen algae, diatoms or ?brown algae,? and hair algae or blanketweed that grows on glass and décor.Safe to use with Fish and Plants:Unlike other products on the market, Tetra AlgaeControl liquid can be safely used in planted aquariums. A precision dropper top helps you to administer the proper dose to your aquarium for safe and effective algae control every time.Tetra Sets the Bar high in Water Care and Maintenance TreatmentsTetra sets the bar high in water care treatment and maintenance with a four-step, color-coded system. From aquarium start-up and routine maintenance, to trouble shooting solutions and testing, Tetra offers everything you need to keep your aquarium water healthy. Take a look at the chart below to see the full line of Tetra water care treatments.New Aquarium? Tetra SafeStart allows you to safely add fish to your tank immediately.Use AquaSafe whenever adding water to neutralize chlorine and heavy metals. Use EasyBalance weekly to keep your water chemistry balanced.High ammonia? Use AmmoniaSafe liquid or tablets. Cloudy water? Clear it up with WaterClarifier liquid or tablets. Algae issues? Keep in check with AlgaeControl liquid or No More Algae tablets.Tetra EasyStrips make regular water testing a breeze.