I just built my first rack and it came out pretty good. I scratched the idea of using regular small animal water bottles. What are the parts I need for this system? I see them on reptile basics inc but theres like a $66 pressure regulator and i was wondering if i really needed that. Are there other systems you recommend? Buy yeah, let me know the basics if you can. Like I said, I'm new to this but I really want to breed my own rats. Thanks.