Is this rock tank safe?

[luluvontepes]

If cleaned properly and checked for ph does this rock look safe for an aquarium? I use driftwood and ph down to compensate for the seiryu stone in my other tanks.

 

[FishBoy101]

I don't see an image.....?

 

[luluvontepes]

Oops sorry
Pic

 

[A201]

Looks like rounded river rock. No worries.