This is step 1 in building this rainwater harvesting system. First acquire a food grade IBC tank, remove tank from cage, clean tank with soap and water, wrap tank in black plastic, place tank back in cage, and cut hole for lid. Step 2 is coming! The IBC tanks I bought off craigslist for $100 each, delivered. The black plastic you can find at Home Depot or Lowes. Thanks for watching!