The system has currently extremly low EC and TDS values. After some weeks when nitrifying bacteria take up their activity, more nutrients will be available in the system. At the moment the system only have 90 microsiemens electronic conductivity (EC), which equates to around 30 ppm total dilute solids (TDS). Well established system will have between 800 and 1200 EC.

 Checking PH ,TDS and EC is a necessary management practice in aquaponic farming. Regular monitoring is therefore crucial.

The PH is currently at 7,1. This will also go down further, once bacteria are fully collonized in the filter. A very good PH value will be around 6,5 - 6,2. That will benefit the plants and is also not harmful to the tilapia and prawns.