Hanna Primo TDS Tester ventilation Fits Metal Halide ballast

Fits Metal Halide ballast

CalCarb need only be applied to 4-5 leaves

The PowerVEG 660 produces a red light spectrum that enhances the flowering stage for plants and is essential for triggering fruiting and flowering

Long Battery Life - The Checker Plus has an exceptional long battery life of approximately 1000 hours

Use on established plants as a growth stimulant and ailing plants as a vitality booster

Hanna Primo TDS Tester ventilation Fits Metal Halide ballastPrimo testers provide a fast and dependable way to measure the total dissolved solids or conductivity in your water samples. Each tester is ideally suited for the rigorous demands of water quality professionals. Many professionals use the cabled version of the Primo when demonstrating the before and after results of conditioning and filtration systems. Temperature is compensated automatically to ensure readings are consistent to the standard or