3 Measuring pH

This is best done with a meter but there are various kits using liquid and papers available. Kits are adequate for applications such as pot culture where the nutrient is supplied to the plant once and is set up before being replenished.

Growers using re-circulinting systems such as NFT or Ebb and Flow will certainly need a meter to monitor their solution accurately. Meters will require regular calibration and instructions for this are supplied with them.