5 Gallon Bucket Ideas!
Water filtration. You can build your own five gallon bucket bio sand filtration system with a few five gallon buckets and some PVC pipe. Detailed instructions on a five gallon bucket based bio sand filtration unit are found on this ten page bucket filter pdf. For more information about the bio sand filtration process, read the BioSand Filter Wikipedia page or this extremely detailed 130 page biofiltration manual put out by the Center of Affordable Water and Sanitation Technology.