If using bleach to cure rocks, just plain ole bleach.
Not the no splash stuff or scented.
If you have a Walmart or dollar general nearby, their house brand "Concentrated" bleach works fine. I do not know why they call it concentrated, it is just regular bleach lol. Just be sure, not "No Splash" or "Scented".
In addition, you can also use vinegar to kill all babies on rocks with a 1: 1 vinegar and water mix.
Iv recently bought a second hand marine aquarium, Iv been soaking the used rock in bleach for a week and have noticed small clear balls on the rock? Has anyone else experienced this? Thank you