I need to disinfect Shelby's tank so it's safe for another animal to live in it. Will nolvasan work (left on 15 mins), or should I use a 10% bleach? I also want to spray the general vicinity outside of the tank (floor walls etc etc) to make extra double triple sure everything harmful is dead. I don't think bleach would be a hot idea for that though (I don't want my floor all white) so is nolvasan suitable for that?