Great to start your own DIY hydroponic system or repair older tubing. The AgroMax Black Vinyl Tubing is great for moving water and nutrients to plants. Use to create drip irrigation, hydroponic lines, or replace tubing that starting to look a little worn down. 100% opaque black vinyl coating blocks lights and prevents algae growth. Designed to fit 1/2" fittings and connectors. Made with BPA-Free and Food-Grade safe material for worry-free growing.