It is an excellent product to use when transporting herring in tank and I highly recommend it. Not only does SHAD-KEEPER™ totally condition the water, but it also removes harmful ammonia from the water. Ammonia and surface foam are two of the key reasons herring are so hard to keep alive. Along with removing ammonia and surface foam, SHAD-KEEPER™ adds all necessary electrolytes herring need. SHAD-KEEPER™ also removes harmful chlorine from city water and melting ice, and any heavy metals which may be found in the water. The oxygen content of the water is enhanced and scales are hardened.
In addition, I also add a product called TRANQUIL™. It is a fish tranquilizer from the same manufacturer, Sure Life. By calmer your baits during transport you reduce injury and loss. With TRANQUIL™ your baits will use less oxygen while producing less waste (ammonia). Bottom line is you can introduce all the oxygen you want to a closed system tank but if you do not manage the waste you run the risk of losing some if not all your baits the longer they stay in the tank.
Man did I sound like an advertisement or what
Maybe I need to see if Sure Life has a guide program.