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: $0.53 / each
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$0.55 You Save: $0.02 (3.6%)
— Ships from Portland, Oregon USA.