Rainwater purifying filter, how to do it in an easy and ecological way
Steps to Build Your Filter 1. Prepare the Container Set up a large container. Drill a hole for a spigot if needed and place it under a downspout. 2. Add Large Gravel Layer Add 1–2 inches of large gravel at the bottom to catch larger debris. 3. Add Small Gravel and Sand Layer 1–2 inches …