My tank was leaking down on the edges.
I could see soaked floor underneath edges of a side.
I glued with adhesives though, I wasn't sure that it was sealed good.
I felt that I needed new intact tank at least 3ft long as the original one which I've been keeping for years.
I searched internet and found a suitable size of second hand tank for a very good price.
I called my friend who drives a truck to deliver the ordered items to his customers.
He helped me bring this tank to my home.
Now my kids like it a lot.