Use whats ever you use in your home. No it's not true bleach will harm the pipes. Bleach will not harm PVC at all. Bleach will kill the bacteria in your holding tanks and stop the break down of waste. That's all it will do.
The bleach will actually keep your pipes clean and keep algae from growing in there.
Dump some bleach in your drains to clear clogs. Been doing it for years and my entire home plumbing system is PVC.
Acetone is a different story.