Chega de botijões de gás! Como consigo gás grátis o ano todo usando dois barris azuis + canos de PV

In this video, the creator demonstrates an updated DIY biogas system that provides free cooking gas year‑round using two blue plastic barrels and a simple PVC pipe layout. The tutorial covers connecting the barrels for a stable gas output, designing the PVC piping for safe and efficient gas transfer, maintaining proper fermentation of organic waste to keep gas production steady, and storing, filtering, and using the gas for daily cooking. It also offers maintenance tips, odor control, and long‑term reliability advice, while emphasizing safety precautions such as working in ventilated areas, avoiding open flames, testing for leaks, and using a check valve and siphon.