Hydrologic Polyethylene Tubing, 50', Black, 3/8" flowering nutrients • Flicker-Free steady state operation

• Flicker-Free steady state operation

Both pH-balancing aids are manufactured using the highest-quality ingredients: potassium hydroxide to raise pH and nitric acid to lower pH

User-friendly operation using only 2 buttons

These grow tents offer waterproof liners

Humboldt Roots was specifically designed to expand the root zone

Hydrologic Polyethylene Tubing, 50', Black, 3/8" flowering nutrients • Flicker-Free steady state operationHydrologic's reverse osmosis filter tubing in black. Sold in lengths of 50 feet with an outer dimension of 3 8". Extra tubing can be useful for customizing your indoor hydroponic water filtration system.