Bleach cure turned caribsea rock blue

[Mr.rota]

I got a bunch of used Carib sea rock off a guy and did a bleach cure to clean it off because im building a new scape to add to my currently running system.
Thing is it turned blue! I’m not worried about the blue colour but I have destroyed this rock in ever being safe to used again in a reef tank? It was non scented plain bleach

 

[trevorhiller]

I imagine you just bleached the dye off of it. I'm sure it's still fine to use, but if you want to be extra safe a soak in some RODI with circulation and a little carbon would probably be the standard advice.