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A pH test kit in liquid form from Growth Technology. A very simple, fast acting and economic solution pH tester.
Mostly used as a back-up for a meter - although not as accurate as a properly calibrated meter but certainly accurate enough to get by with. Many growers have used nothing else for years producing extremely beautiful and healthy plants.
Recommended to all growers, especially those whose meters need calibrating or repairing. The ideal quick solution back-up.
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