Got an intex auto cleaner for my pool (22 x 54") and started to use it today. Past history is that my pool has been on the ground outside spread out to dry it out before putting it up AGAIN. Anyway, put the pool up the other day and noticed that their was grim on the side of the pool and bottom of it as well as the outside of the pool. Clean it all off the surface of the pool inside and filled up the pool. I was thinking maybe this intex auto cleaner would take care of it, but it's not. It's like a lot of debris on the bottom. So took a broom and decided if it was stuck to the bottom of the pool or not and found out it's not. So my question is, what is a good vacuum cleaner to purchase that can pick this stuff up and sand?