I have a Brackish water tank – which bacteria is for me?

The choice of whether to use the Freshwater One & Only or the Saltwater One & Only bacteria in a brackish water tank depends upon the salinity (or specific gravity [S.G.]) of your water.

If your salinity is less than 10 ppt (1.007 S.G.) then use the freshwater formula.

If your salinity is greater than 10 ppt (1.007 S.G.) then use the saltwater formula.