On Wed, 19 Sep 2018 10:36:01 -0400, Ed Pawlowski wrote

Pretty much that would be it. Assuming the fittings match. I'm not
sure what type of connector you have.

Good question on the fittings!

I am contemplating doing this so I don't even know where to get the smaller
tanks yet but I'll watch out for fitting mismatch.

Does Home Depot sell the smaller tanks?
I'm thinking of a size that's about as tall as a short person.