Brom Tabs Based on Dantabrom chemistry, these tabs provide a concentrated source of active bromine that is ideal for hot tub sanitizing. These tablets dissolve slowly and evenly and fit in most spa feeders and floaters to provide continuous disinfection of your spa. Features: Contain 10% more active sanitizer than BCDMH. Brom Tabs are 2.5 times more soluble than BCDMH which is ideal for floating spa feeders. Creates a faster bromine residual for spa startup. Brom Tabs utilize Dantabrom chemistry which creates a better dissolution rate in a floating feeder.