Dr Tims waste away product killed my fish in my 15 gallon nano. There are no warning labels on the container that urge you to increase the water turnover in your tank or even add an airstone to prevent the bacteria from completely starving your fish for air. As a brand aimed at beginners with all of their quick fix solutions, this is incredibly frustrating that they would set you up for failure by not adding a warning label. I messaged them on their website nearly a month ago and recieved no reply. Beginner beware.
