Treating interconnected tanks or tanks with baffles can be challenging. Treatments added initially may end up unevenly distributed with most of it ending up in the tank being filled and only a fraction leaching into the other tank. Not ideal, right?
When dealing with interconnected tanks, it's best to run them as low as possible before topping off. Add your treatment beforehand, then begin filling. This ensures that the treatment is pushed into the second tank as it dissolves, promoting even dispersion. With Aquatabs Marine, for instance, which takes about five minutes to dissolve, this method ensures efficient distribution throughout the system.