1/2" ID Blue Vinyl Tubing. Priced Per Foot. May be used to monitor nutrient levels by attaching to the outside of a reservoir via 1/2-inch grommet and 1/2-elbow. When the nutrient levels rise or fall you will be able to see it.
Price: $0.51 / each Estimate Shipping · Price Match
List Price: $0.55 You Save: $0.04 (7.3%)
— Ships from Portland, Oregon USA.