PH and EC Relation

[omerizm]

Hello,

As I adjust the PH of the nutrient solution, I realised that also the EC goes up. It makes sense, since I am adding more ions to the solution which conduct electricity. But how will I control nutrition if the EC keeps changing without a change in the actual nutrient concentration?

Also, My PH changes quite rapidly, I have to make adjustments every day, if not more. And I am getting sick of it. I can not spend 500-1000 bucks for a automated ph doser. Maybe there is something cheaper that I could buy or build myself, any suggestions or ideas?

Thanks in advance.