It's trial and error. If it's too low it won't drain fast enough. If it's too high then it won't hold water.

thank you.

it all depends on what kind of tub you have and how your bathroom was built and set up.

their is not an exact length. it's just one of those things your going to have to judge yourself.

Thanks for sharing..

hope you got this figured out, because their isn't a set length

Not too long, it's just something you're going to have to kind of guess at it

Yeah you need to use own thing to buy bathtub according to your need and bathroom size.

Thanks.