I recently watched a youtube video on how to make a Berkey water filter using two 5 gallon buckets. I cant wait to make my own. I plan to buy two of the Black element Berkey filters and make one of these. I think it might be useful to have an extra set as replacement. Here are some pictures of the DIY project I found and a picture of an actual Berkey filtering system. They are pretty spendey so Im excited to make my own.