![Amazon.com : ADIOS! Hot Tub Hard Water Calcium Remover with Scale and Stain Clarifier, Soften Treat and Reduce Spa Deposits - Quart (32 oz) : Patio, Lawn & Garden Amazon.com : ADIOS! Hot Tub Hard Water Calcium Remover with Scale and Stain Clarifier, Soften Treat and Reduce Spa Deposits - Quart (32 oz) : Patio, Lawn & Garden](https://m.media-amazon.com/images/I/619hR5g3GuL.jpg)
Amazon.com : ADIOS! Hot Tub Hard Water Calcium Remover with Scale and Stain Clarifier, Soften Treat and Reduce Spa Deposits - Quart (32 oz) : Patio, Lawn & Garden
![Same problem for months.. What is this? Stuff on water surface after jets have been on - Portable Hot Tubs & Spas - Pool and Spa Forum Same problem for months.. What is this? Stuff on water surface after jets have been on - Portable Hot Tubs & Spas - Pool and Spa Forum](https://www.poolspaforum.com/forum/uploads/monthly_2018_08/IMG_20180808_210321-2.jpg.0dc55964594687fa36beda9acecd5997.jpg)
Same problem for months.. What is this? Stuff on water surface after jets have been on - Portable Hot Tubs & Spas - Pool and Spa Forum
![Heavy Calcium buildup/efflorescence above waterline. Struggling to get rid of it - Portable Hot Tubs & Spas - Pool and Spa Forum Heavy Calcium buildup/efflorescence above waterline. Struggling to get rid of it - Portable Hot Tubs & Spas - Pool and Spa Forum](https://www.poolspaforum.com/forum/uploads/monthly_2021_05/r6CTlUe.jpg.948aa7062e861fce8c4457e7a4565435.jpg)
Heavy Calcium buildup/efflorescence above waterline. Struggling to get rid of it - Portable Hot Tubs & Spas - Pool and Spa Forum
![Amazon.com : ADIOS! Hot Tub Hard Water Calcium Remover with Scale and Stain Clarifier, Soften Treat and Reduce Spa Deposits - Quart (32 oz) : Patio, Lawn & Garden Amazon.com : ADIOS! Hot Tub Hard Water Calcium Remover with Scale and Stain Clarifier, Soften Treat and Reduce Spa Deposits - Quart (32 oz) : Patio, Lawn & Garden](https://m.media-amazon.com/images/I/81Y1oiFsjUL._AC_UF350,350_QL80_.jpg)
Amazon.com : ADIOS! Hot Tub Hard Water Calcium Remover with Scale and Stain Clarifier, Soften Treat and Reduce Spa Deposits - Quart (32 oz) : Patio, Lawn & Garden
![Heavy Calcium buildup/efflorescence above waterline. Struggling to get rid of it - Portable Hot Tubs & Spas - Pool and Spa Forum Heavy Calcium buildup/efflorescence above waterline. Struggling to get rid of it - Portable Hot Tubs & Spas - Pool and Spa Forum](https://www.poolspaforum.com/forum/uploads/monthly_2021_05/FYDLjYk.jpg.79e5cddbca0c8635fe70c81dfcab7cb0.jpg)