[Coral-List] Whitening coral skeleton

[CR .Persian Gulf]

Dear coral-listers
We are a group of MSc students working on morphometric and genetic
variation of* Porites compressa* and *Stylophora pistillata *and their
associatied *Zooxanthellae *along northern Persian Gulf. We are wondering
if their is any guidance on how to whiten mentioned coral using bleach
without damaging coral skeleton. Any comments would be very much
appreciated.
 With best regards
Safoura Behzadi    * *