I have about a 4.5' x 4.5' area (give or take I can make bigger or smaller) that I want to install a small water feature. I went by a local pond store and they showed me a "mini pond unit" that retailed for $900. This is for my house but as small as it is I am not willing to pay $900 (plus rocks & my labor) to put this small of a feature in. Can I pick some stuff up at Lowe's and do as good of a job? It is for my house but we won't be here more than 4 or 5 more years. I just wanted to practice and add a nice feature for the time being. But if its going to be that much I will just fill in with flagstone. Thanks for any ideas and advice.