All natural, eco friendly Stain Scale Control cleaner for Hot Tubs Pools made of Citric Acid. Removes hard water deposits and breaks down grease. Please ensure read all proper precautions and warnings listed on product label. —- INSTRUCTIONS FOR USAGE: Note that this cleaner is meant to be used before you drain your hot tub. For every 1000 litres, add 1kg of hot tub cleaner to existing water in hot tub. Run your hot tub for 24 hours as you normally would at regular temperature. then drain tub completely, no rinsing is required. Refill hot tub as normal. Product of CanadaProduct of Canada. 100 Satisfaction Guaranteed. Use 1 kg of Cleaner per 1000 litres of water. Breaks Down Grease. Removes Hard Water Deposits. All Natural Eco Friendly Stain Scale Remover for Hot Tubs and Pools.