Your journey to a better aquarium begins today Immunity Vitamin C Supplement 4 oz 2X Concentration! Free Shipping! Immunity Vitamin C Supplement is extremely beneficial to all aquatic organisms. In corals, regular usage has shown increased growth and faster repair from damage incurred during fragging. Immunity is also useful to help fish recover from injury or disease. Fish will more quickly recover from devastating diseases such as Hole In Head (HIH or HITH) disease. Regular usage will decrease the likelihood of such infections and decrease the severity of infections that do occur. Instructions: If Adding to Food (Recommended): For dry food, place food in a small cup or bowl and add just enough Immunity to saturate. Allow to sit for 3-5 minutes before feeding. For liquid or frozen food, add 4-5 drops per teaspoon. Mix and allow to sit for 3-5 minutes before feeding. If Adding Directly to Aquarium: Start by adding one drop per 20 gallons daily (1/2 tsp per 100 gallons). Alternatively, you may add 1/2 tsp per 20 gallons once per week. After maintaining this dosage for 4 weeks, slowly increase the dosage to 2 drops per 20 gallons daily (1 tsp per 100 gallons). If dosing weekly, the final dosage rate would be 1 tsp per 20 gallons. It is completely safe for freshwater and saltwater aquariums, and it can be used at several times its normal dosage without hurting delicate fish or invertebrates. 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-12-18 at 15:11:44 PDT, seller added the following information: