 provide the awesome gel in single use pouches these are specifically designed for hot tubs so if you have around a 400 gallon hot tub give or take you just simply open one of the pouches squeeze the contents out right into your hot tub and and follow the instructions to purge your hot tub so there's no more teaspoons and measuring things out you just open the package push it out into the tub you're good to go we sell those singly so just you can buy them one at a time