Leisure Time Reserve is a product designed for spa and hot tub water maintenance, particularly as a stabilizer for chlorine or bromine. It helps prevent the loss of sanitizer due to sunlight exposure and extends the effectiveness of chlorine or bromine, ultimately reducing the amount of sanitizer needed to maintain proper water sanitation. Leisure Time Reserve is typically added to the spa water during initial filling or whenever sanitizer levels are adjusted to ensure consistent and reliable water chemistry. It aids in maintaining balanced water chemistry and prolongs the life of sanitizers, providing a more comfortable and enjoyable soaking experience.