How long to wait after SHOCK

[bulmer4nc]

Just curious...  How long do people typically wait after shocking before you go in your spa?  We're using the Liesure Time OZ tablets right now and I get the impression you can go in after 15 minutes from the label (it's not really clear).  Anyhow, it's 2 hours after shocking and my test strip shows bromine/chlorine levels very high still.  (not sure how this really works since it's a non-chlorine shock)

Thoughts?

Here's a link to the shock we're using...

http://www.leisuretimespa.com/TechDataInfo.asp?authID=619359176&ProductID=4

[Dr. Spa™ Ret.]

15 minutes................ after they dissolve.