General Hydroponics: PPM Calibration Solution Size:1 Quart The multiple sugar varieties help

The multiple sugar varieties help with feeding beneficial bacteria and fungi in your root zone

The Bluelab pH Pen also measures the temperature of the solution

the transport of those nutrients throughout plants and your plant’s metabolism…

- cleanable sediment prefilter

General Hydroponics: PPM Calibration Solution Size:1 Quart The multiple sugar varieties helpGeneral hydroponics uses the highest quality electronic meter reference solutions. Growers can use our reference solutions widely among many popular brands of meters using the NaCl scale. General hydroponics technicians check each batch to ensure that our solutions are exactly calibrated each time they are used.