I would buy a better one......is called a "water bed".....would hold around 200 gallons and all that you would have to do is to put a couple of spoonfull of clorox before filling it.

If you want you can change the water every couple of years, good for drinking, toilet or whatever.
"If you don't hold it, you don't own it"... Ponce

"To be ready is not"... Ponce