Active Aqua Clear Vinyl Tubing

The 1/4" OD (HGTB14) is a fine-line tubing sized by its outside diameter, with a 0.17" inside diameter — suited for drip emitters and precise low-volume feeds. The 3/8" ID (HGTB38) is sized by its inside diameter at 0.38", with a 0.50" outside diameter, making it better suited for mid-range supply lines, manifold connections, and higher-flow applications. Both are rated for 45 PSI at 70°F.

Yes — both variants are FDA-approved and BPA-free, making them fully safe for contact with hydroponic nutrient solutions and edible crops. The material meets food-safety standards and won't leach harmful compounds into your water supply under normal operating conditions.

Clear tubing does allow light transmission, which can promote algae growth in lines that receive direct or indirect light exposure. To minimize this, route tubing away from light sources where possible, or wrap exposed sections in reflective tape or light-blocking sleeves. The tradeoff is full flow visibility, which makes it easier to monitor your system and catch blockages or air pockets early.

Yes — this tubing is compatible with standard barbed, push-fit, and compression fittings, such as those found in the Active Aqua Fill/Drain Combo Kit, sized to match each variant's diameter. The 1/4" OD tubing accepts fittings designed for 1/4" OD connections, while the 3/8" ID tubing accepts fittings sized for 3/8" ID lines, including the Active Aqua Elbow Connector.

For the 1/4" OD size, standard scissors produce a clean cut without any wall compression. For the wider 3/8" ID variant, a dedicated tubing cutter or a sharp utility knife against a flat surface will give a cleaner, more square edge than scissors alone. A square cut ensures the tubing seats fully into fittings and creates a proper seal without leaks.

Clear tubing is the better choice when flow monitoring is a priority — such as verifying that emitters are running, checking for air locks, or inspecting solution color and clarity during feeding cycles. Black vinyl tubing is preferable when the lines will be exposed to light for extended periods, since it fully blocks light transmission and prevents algae from forming inside the line. Many growers use both: clear for visible monitoring points and Active Aqua Black Vinyl Tubing for main runs.