The Cold Plunge Necessity Kit is your all-in-one solution for maintaining clean, clear, and balanced cold plunge water—effortlessly. This powerful duo combines the trusted 3-in-1 Weekly Treatment and our NEW Water Stabilizer for a professional-grade water care system that clarifies, softens, and refreshes your plunge without harsh chemicals or draining. Perfect for all plunge types—from acrylic tubs to portable ice baths. This kit helps reduce buildup and odor while keeping your cleaning routine simple and consistent.