Hydroponic Nutrients, Growing Systems, Grow Media & Supplies to Grow Plants Indoors All Year

TDS-EZ Water Quality Tester ! Economy model ideal for end-users • Fun, translucent blue housing • Reliable meter at an unbeatable price • Includes a TDS chart on the back of the meter

COM-100: Waterproof EC / TDS / Temp Combo Meter ! Ideal for all water quality testing, water purification applications, wastewater regulation, aquaculture, hydroponics, colloidal silver, labs & scientific testing, pools & spas, ecology testing, boilers & cooling towers, water treatment and more.