Your journey to a better aquarium begins today 100g 99.9% Metro Expiration 11/30/2021 FOR AQUARIUM USE ONLY! NOT FOR HUMAN USE! Metro is effective against both internal and external infections of gram-positive bacteria and some parasitic infections. It has long been used for Hexamita (Hole-In-Head Disease), freshwater and saltwater Ich, Fin-Rot, Bloat and many other aquarium illnesses.. When used for internal bacterial infections, it should be mixed with food. Metro should be used in a quarantine tank if possible as some species may not be tolerant of its use. Beware of other retailers selling expired product for less ? Expiration Date: 12/31/2026 Directions: 1. Remove all activated carbon from aquarium. 2. Do a routine 20-30% water change of the tank. 3. Measure 1 gram per 30 gallons to be treated (~1/4 teaspoon per 30 gallons). 4. Dissolve dosage in 1 cup of aquarium water and add to tank. 5. Wait 1-2 days, perform another 20-30% water change and re-dose the metro. 6. Repeat step 5 for a total of 5 treatments. Warning: This should only be used for the purposes listed here. All responsibility of usage lies with the purchaser. We ship out daily via USPS. Shipping Information All orders are shipped within 24 hours M-F. If you order later in the day on Friday or on Saturday or Sunday, your order will ship early Monday morning. Return Information If you are not 100% satisfied with your purchase, you can return the product and get a full refund or exchange the product for another one. You can return a product for up to 14 days from the date you purchased it. Any product you return must be in the same condition you received it and in the original packaging. On Mar-22-18 at 15:05:50 PDT, seller added the following information: