Description
They cannot provide any detail on the concentrations of individual nutrients. Therefore, since a "satisfactory" reading does not imply a balanced nutrient mixture (or provide information on the level of nuisance salts), it is wise to dump every 7-14 days. This is particularly necessary when using salty make-up water because such water causes nuisance chemicals to build up rapidly to toxic levels.
- For Calibration of Conductivity (EC) and TDS Meters
- Calibrates to 2.76mS/cm or cF 27.6 at 25°C (77°F)
- Contains Potassium Chloride
- Based on international (APHA) standard formula
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