I live in an apartment house with very old, antique plumbing. I have a clog in the bathtub. I've tried using the plunger and running the hot water, both of which did not work. Since the pipes are so old, I am very reluctant to use any drain-unclogging chemicals, and I would like to know if there is anything else I can do before calling in a plumber (which I REALLY can't afford because I'm a starving student). I've read that I should perhaps try cleaning the drum trap, but it's incredibly delicate-looking, and I don't know if I can attempt that. Can anyone please help? Thanks in advance for your time!

if cpvc can handle hot h20 and regular pvc only cold, why not use cpvc for both ? i guess a large project might save money but for us simple homeowners, why store both?