Chemi-Pure Blue Nano, in conveniently sized 2" x 2" nylon packets, offers the ultimate in customizable filtration. Use with small desktop or nano aquariums or supplement existing media utilized in larger aquariums to maintain crystal-clear aquarium water.110g Chemi-Pure Blue Nano contains five individual 22g packets in a convenient resealable pouch. Each packet treats up to 5 gallons of water. This product is packaged wet.The benefits of using Chemi-Pure Blue: Keeps pH stable and constant. Reduces fish loss due to pH changes or polluted water. Keeps aquariums crystal clear. Provides positive neurological reactions in fish, mimicking a natural environment. Removes dissolved organics. Helps fish have a better appetite. Eliminates osmotic shock. Increases fish life span. Filters out coppers, metals, odors and phenol. Prevents ion antagonism. Chemi-pure Blue is specially created for fantastic results in reef and marine aquariums. The proprietary blend of premium, low-dust pelleted carbon and high capacity ion-exchange resins are skillfully combined to create a superior all-in-one filter media in a nylon bag. Chemi-pure Blue significantly reduces organic compounds and phosphates while raising redox and helping stabilize pH for a healthy, crystal clear aquarium.Size: 1 Pouch of 5 Nano Packets