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Looking for Affordable EC and pH Auto Controllers

Hello everyone,

I'm looking to purchase automatic EC and pH controllers for my grow setup, but most options seem to be quite expensive. Does anyone have recommendations for reliable yet affordable automatic controllers? I'm on a tight budget and would greatly appreciate any suggestions or feedback on where to find the best deals.

Thanks in advance!
 

Orange's Greenhouse

Active member
What you want is not cheap. If you DIY it you're looking at about 300-400 USD for pH control. But need to programm your own microcontroller.
If you don't want to do that or require more reliability you're looking at 4 digit prices or more.

I don't understand what you mean with EC control? Do you have any idea how different ions are taken up by plants?
 
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I JUST BOUGHT THIS FOR ARROUND 200$

Specifications of Automatic Digital pH Controller Kontrol:​

Brand: Prosystem Aqua.
Model: Kontrol 01 pH.

  • Dosing Pump.
  • LCD Display.
  • Automatic Proportional Dosing.
  • Max Pressure: 1.5 bar.
  • Flow Rate: 40 ml/h.
  • Operating Temperature: 0 to 100°C.
  • Accuracy: ± 1% F.S.
  • Current Output: 4 ÷ 20 mA (± 2%).
  • pH Measurement Range: 0-14 pH.
  • Resolution: 0.01 pH.
  • pH Measurement Accuracy: ± 1% F.S.
  • pH Regulation Range: 3-8 pH.
  • Single Point Calibration: pH 7.
  • Set Point: 2 independent adjustable points, 10 A 250V.
  • Dosing Programming Capability: Acidic or alkaline dosing.
  • Standard Power Supply: 100 - 240 V - 50/60 Hz.
  • Protection Rating: IP 65.
  • Weight: 1.8 kg.

Included with the Automatic Digital pH Controller:​

  • Automatic pH Controller + Dosing Pump (Kontrol 01).
  • BNC pH Electrode: SPH-1-S-1.5 with a 1.5 m cable.
  • Wall-Mount Connection Support.
  • pH 7 Calibration Solution (70 ml).
  • Accessories: Suction tube, discharge tube, injector.
 

Orange's Greenhouse

Active member
The normal, cheap, pH electrodes are not meant to be submersed continously. They degrade quickly due to ionic strength of the solution and biofilm build up. Cleaning and calibration can extend their life.
The better electrodes meant for this application are 200-300 each.
 
The normal, cheap, pH electrodes are not meant to be submersed continously. They degrade quickly due to ionic strength of the solution and biofilm build up. Cleaning and calibration can extend their life.
The better electrodes meant for this application are 200-300 each.
How often would I have to wash it? Would isopropyl alcohol be good for cleaning the electrode?
 
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