The AquaDoc pH Increaser is a product by MAV AquaDoc, made in the United States specifically for hot tubs. It is designed to increase the pH levels of the water, ensuring a comfortable and safe environment for users. This product helps maintain the proper chemical balance in the hot tub, allowing for a relaxing and rejuvenating experience. Made with high-quality materials and expert craftsmanship, the AquaDoc pH Increaser is a reliable solution for maintaining the water quality in your hot tub.