1/2'' x 100' Black Vinyl Tubing lighting-&-electrical-components it would be Eliminator

it would be Eliminator

The alarm also goes off if the pH and/or TDS are not corrected within the operator-determined time frame of 1 to 10 minutes

Does it require electricity or a pump

Langbeinite

1/2'' x 100' Black Vinyl Tubing lighting-&-electrical-components it would be EliminatorThis size is no longer in stock, but we do have 1 4" x 100' here. Black Vinyl Tubing (ID) 1 2" (OD) 5 8" 100 ft Made from strong and durable vinyl material, these tubes are available in a variety of sizes and lengths, great for use with air or water. The tube walls are thick and flexible, and you may choose between the 100% opaque black vinyl, which prevents algae growth, or the clear vinyl that allow for complete visibility. Inner Dimensions: 1 2''