D.I.Y. DWC Materials needed. 1. Black 3.5 gallon bucket. There are 2 kinds of lids for these, regular lids on the left, and special pre-made lids on the right. I recommend using the ones with the pre-made net pots, the are very nice to use. 2. In this step you will need three things. An air pump, there is a vast selection of these on the market. They come from 1-8 ports or more. I use a 4 port air pump. You will also need an air stone, One similar to this one will work fine. Finally, you will need some tubing to connect the previous two items together. A WISE SUGGESTION, use black hose or tubing, or any hose that will not allow light to shine through. IMO it helps keep your buckets cleaner.