Active Aqua Black Tubing 100' Roll Options:5/16" ID Black Tubing 100' A single ceramic junction provides

A single ceramic junction provides long electrode life in harsh environments

Light Rail works great with all reflectors

Digital Sugar Refractometer for general purpose with automatic temperature compensation (ATC)

by accentuating the production of nucleic acids and photosynthesis

or eight 240V devices

Active Aqua Black Tubing 100' Roll Options:5/16" ID Black Tubing 100' A single ceramic junction providesUse our sturdy black vinyl tubing, which is FDA approved and BPA free, for your irrigation systems and tanks, and to complete your own hydroponic systems. The material is easy to cut to size, but will remain strong and reliable. Choose from six different 100 foot sizes, each in a convenient dispenser pack. Keep a roll on hand for instant access to repairs. Inside Diameter Outside Diameter . 31" . 40"