Awhile back I had gotten one of those little pools that don't really need to be assembled. I found it for next to nothing since they were getting rid of them, but I didn't have a place to really plug in the filter and the other stuff. I ended up giving the pool to my brother so my niece Little K could enjoy it. The other day he mentioned that he didn't use a filter and asked if I knew what happens when you don't? Frogs and tadpoles started living in the water.