Create the perfect environment though excellent filter media that will enhance plant growth and reduce tannins, odors, toxins, organic compounds and medications from your freshwater or planted aquarium without removing essential nutrients, all packed in a handy nylon bag. Boyd Chemi-Pure Green is an all-in-one filtration media which combines premium low dust pelletized, activated carbon with the highest grade of ion-exchange resins. Your pH and macronutrient levels will be stabilized and easily maintained, with super low ash content which rinses clear fast. Now you can achieve crystal clear water while optimizing the health and well-being of your aquarium in one simple step.