Waterproof Conductivity Meter (Pen Style) Meters & Solutions You can also add more

You can also add more Classics to the main 8mm line or add another kit and second bulkhead fitting to the same bucket to extend the number of plants

and Grower-Friendly:

use clean ethanol to wipe down the sealing surfaces for the next run

users manual

A key component of Root Riot cubes is their ability to retain moisture due to their spongy texture

Waterproof Conductivity Meter (Pen Style) Meters & Solutions You can also add moreHighly stable and accurate readings with a large LCD display. Designed for simple one hand operation. Simultaneously displays the parameter being measured and temperature in C or F. Features automatic temperature compensation, 2 pt. calibration, auto power off, hold function, and a low battery indicator. The case is IP65 waterproof, and will float if accidentally dropped into the water. Comes with 4 button cell batteries and a built in probe with