How to regulate TDS (Total Dissolved Solids) and EC (Electrical Conductivity) (Urdu|Hindi)

How to Regulate TDS (Total Dissolved Solids) and EC (Electrical Conductivity). In this video i have explained in detail about how to regulate TDS/EC of nutrient tank.

What is Total Dissolved Solid/Salts (TDS) and the reason of checking EC not TDS:


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(Urdu/Hindi)