No need for concern, the live rock was from an established fishtank of several years, thus it was fully cured.
Water:
78 F
sal 1.024
NH3 -0
NO2 -0
NO3 -10
Corelife super skimmer
Fluval 205
45 pounds of live rock
Current Bioload - 2 clowns, 7 snails, 2 scarlet hermit crabs, 1 cleaner shrimp...