Ujjdwiurgh 2 Pack Spa Mineral Sticks Parts Cartridges for Swimming Pool Fish Pond Filter, Last for 4 Month Blue & Yellow

Long Lasting: Our sticks for spas up to 500 Gallons/2000L. Spa mineral stick has a maintenance time of up to 4 months. Easy to Install: Just put the spa wand into the existing filter and let the wand work Safe Materials: Our well-made mineral sticks are made of premium ABS plastic, strong and odorless. Natural Spa Experience: The nature spa mineral stick can automatically add to the hot springs, reducing impurities in the hot springs to create clearer and cleaner water Wide Application: Suitable for most spas and also compatible use for inflatable spa and plunge pools and most easy-to-use standard bathtubs