Hanna Industrial Grade pH/TDS Controller w/Proportional Control of Fertilization fluorescent-lighting Double Ag/AgCl reference for less

Double Ag/AgCl reference for less noise (unwanted voltages) than gold or silver electrodes and

these fans move air in a coherent horizontal pattern creating a gentle 'racetrack' air flow pattern needed in greenhouses to maximize heat distribution and humidity control by mixing the air

Both S1 and S4 spectrums are available in 100V through 480V configurations

Additional natural veganic ingredients have also been added to facilitate high metabolism and growth rates in all plants

and intracanopy configurations

Hanna Industrial Grade pH/TDS Controller w/Proportional Control of Fertilization fluorescent-lighting Double Ag/AgCl reference for lessAdd this 2 in 1 pH and TDS controller engineered for economical dosage of fertilizer solutions in hydroponics to your growroom. The product measures pH from 0 to 14 and TDS from 0 to 1999 mg L (ppm). Two separate set points can be adjusted from 4 to 7 pH and 900 to 1800 ppm (mg L). The relays are activated when the pH exceeds the set point or TDS falls below the desired value. Two pumps or electrovalves can be wired directly to the controller and be