![Amazon.com : Hot Tub Things Oxidizing Spa Shock 5 Pounds - Prevents Organic Buildup & Cloudy Water for Swimming, Above & Inground Pools, comparable to spa Guard Enhanced Shock for hot tub Amazon.com : Hot Tub Things Oxidizing Spa Shock 5 Pounds - Prevents Organic Buildup & Cloudy Water for Swimming, Above & Inground Pools, comparable to spa Guard Enhanced Shock for hot tub](https://m.media-amazon.com/images/I/71SG+u4buzL.jpg)
Amazon.com : Hot Tub Things Oxidizing Spa Shock 5 Pounds - Prevents Organic Buildup & Cloudy Water for Swimming, Above & Inground Pools, comparable to spa Guard Enhanced Shock for hot tub
![Hot tub water turns brown *every* time the chlorine level is brought from 0 to normal, WTF at wits end : r/hottub Hot tub water turns brown *every* time the chlorine level is brought from 0 to normal, WTF at wits end : r/hottub](https://i.redd.it/o98tqcem3up91.jpg)
Hot tub water turns brown *every* time the chlorine level is brought from 0 to normal, WTF at wits end : r/hottub
![Hot tub water turns green temporarily after chlorine shock. Copper level is 0. What's going on? : r/hottub Hot tub water turns green temporarily after chlorine shock. Copper level is 0. What's going on? : r/hottub](https://i.redd.it/lnopyujrio971.jpg)