its as safe as the person using it
its as safe as the person using it
well said.
If you are not careful/ stupid with it by attaching regs without the saftey pin, not attaching the reg secuerly/ safely, laying on it side, unstable surface etc then it can be unsafe. However if you be sensible then it will be fine.
I have a 2 and 3 year old. Saintly has a 3 year old. Takes some supervision but I do have a locked cabinet under my tank so no fingers can touch any gear. The heater is in the open but with some sellotape over the dial so the temp doesn't get changed
AC