Thanks to SILK BALANCE I am able to enjoy our hot tub again. My husband, Brian, & I used our hot tub nightly until we started developing a rash that was ugly & very irritating. We were told by our spa supply person that we were not sanitizing properly. Trust me when I tell you this was not the case. We tried everything! He was very diligent about testing, sanitizing etc…on a daily basis for months on end but I was still suffering to the point I would no longer use the tub. Someone told us about SILK BALANCE & we thought what do we have to lose? Hallelujah! I am now able to enjoy again. We use only SILK BALANCE & enhanced shock…nothing else & the water is perfect! Thank you SILK BALANCE for giving us our hot tub time back!