Nitro Posted March 30, 2009 Report Share Posted March 30, 2009 This topic comes up quite a bit, so I thought I'd post a How To guide. Decontamination is the process of Super Shocking to Kill and Oxidize everything in your tub. There are two reasons why you would want to do this. One is your tub contains an excess amount of organic waste, and is using large amounts of sanitizer. The other is you have bacteria actively growing in your tub that has formed a protective shield (Biofilm), and cannot be killed from normal sanitation levels. The former is easy to tell by measuring sanitation levels, but the latter is more difficult (usually not until after you start getting sick). This may sound extreme to some, but I recommend decontaminating any used tub that changes hands. You have no way of knowing how a used tub was maintained before you got it. Why chance getting sick?!? You have nothing to lose, and nice clean, safe tub to gain. So how do you do a decontamination?!? Here's how. 1. Use an enzyme to clean out your pipes, such as Swirl Away, Spa Flush etc. Add this product, run the jets 30 mins and let sit overnight. It will clean out your pipes and deposit the gunk along the water line. Wipe the waterline with a dry paper towel or cloth. Make sure you remove your filter before adding this product. Better yet, buy a new filter. 2. The next day, drain your tub and clean the walls with some leftover enzyme from step one. 3. Refill tub as high as possible (above the normal waterline) with fresh water, and install filter. 4. Balance your water at this point. TA = 80 ppm and pH = 7.2. If your pH is too far out of range, it will decrease the effectiveness of the Chlorine. 5. Add 50 ppm FC using Regular Clorox 6% Unscented Bleach. That's approx. 1/4 gal (32 oz) per 350 gal tub. 6. Run all jets and air features for 30-60 mins. You can turn the air on and off every 10 mins, to help clean the air lines. 7. Cut the power and drain the tub. This water is highly chlorinated, so you may want to keep it away from vegetation. 8. While the tub is draining clean the cover and all shell surfaces with the super chlorinated water. Then rinse well. 9. Refill tub with fresh water. 10. Balance water. Test your Chlorine Demand to make sure the Decontamination worked by doing the following. 11. Shock with Dichlor (Stabilized Chlorine) to 10 ppm FC. Don't use the tub, let the jets run 10 mins, cover and let sit 24 hours. 12. Check FC. If FC is 5 ppm or above, you're ok. If it's zero, your tub is still using excess Chlorine, and needs to be decontaminated again (Absent the Spa Flush). However, this should be rare. After this procedure your tub should be clean like new. If you maintain your water properly, your should never have to do this again. Happy Clean Tubing! 1 Quote Link to comment Share on other sites More sharing options...
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.