Spa Choice 472-3-5071 Seal a Leak Minor Cracks and Leaks Repairing Solution for Spas and Hot Tubs, 1-Pint Repairs Minor Cracks and Leaks If leak location unknown, add seal a leak to the skimmer If leak location known, pour directly into the water at the area of leak Stops Leaks Within 24 Hours Downloadable User Guide Available Under Product Information: Technical Specifications