I have toyed with the idea of bromine via the two step method (the tabs have something (dimethlyhydantoin) that will build up in your pool and act as a inhibitor to the bromine). My pool is heavily shaded and I use very little CYA for my chlorine usage anyway. FYI, chlorine (w/o CYA) has a UV degradation rate faster than bromine.
The main reason I am looking at it is that my pool pH is constantly moving to 8. The bromine is much more effective at this higher pH than chlorine (83% killing efficiency for bromine at this level and only 22% for chlorine).
I would still use bleach as the bromine activator though as Waterbear has written that it is much better than non-chlorine shock for this purpose. What are you using as your activator (shock)?
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