How to Maintain a Y-Filter in a ZipFarm by Amy Storey | Aug 2, 2016 | Technology, Materials & Equipment | 2 comments This content is for Monthly Unlimited members only.Log In Register Related posts:Plumbing in Hydroponics: How to Join PipesHow to Use and Mix Your Own Soilless Potting Mix for HydroponicsPlumbing in Hydroponics: What You Need to Know About Valves6 Types of LED Light Bars for Indoor Farming