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CropKing Fertroller




The CropKing Fertroller enables the grower to automatically control the EC and pH of the nutrient solution in hydroponic systems. With automatic EC and pH control, the grower can maintain more consistent solution conditions and prevent potentially damaging issues such as insufficient levels of hydroponic nutrients or pH swings. By automating EC & pH meter monitoring with the CropKing Fertroller, you can increase production, enhance crop quality, and free up more time for other important garden tasks.

Your Garden's Success is our #1 Priority

HTG Supply is committed to providing you with the very best products, pricing and service in the industry. We will ship your order fast and discreetly packaged to protect your privacy. Buy with confidence knowing your HTG Supply purchase includes simple returns as well as lifetime product support. Call our team of real growing experts with your purchasing or product use questions, and we will be here to help!

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Customer Service:  1-866-710-GROW (4769) | | Hours: Mon-Fri 9:00 a.m. to 5:00 p.m.


CropKing Fertroller Features

The CropKing Fertroller is more than just a controller. It’s peace of mind. The Fertroller unit features a built-in BlueLab Dostronic controller designed specifically for use in hydroponic growing systems and comes completely assembled and mounted on a tubular steel stand wired for 120-volt power. The Fertroller also incorporates a pre-mounted two head pump to deliver “A” & “B” nutrient concentrates as well as an additional single-head pump to control pH through the delivery of pH up or pH down solutions.

The Fertroller will provide continuous control of EC and pH of the nutrient solution by adding nutrient and/or pH control solutions as needed. Easily adjustable set points and dosing cycles (on/off times) are displayed along with your desired targets on large digital readouts. The Fertroller also features adjustable alarm triggers that can be integrated with your greenhouse alarm system. A preset safety lockout feature prevents dosing if EC, pH, and/or solution flow is out of range.


  • EC control measurement range:  0.0 – 9.9 mS/cm
  • EC control range:  0.2 – 9.8 mS/cm
  • 0.1 EC resolution with accuracy of ±3%
  • pH control measurement range:  4.0 – 7.2 pH
  • pH control range:  5.0 – 7.2 pH
  • 0.1 pH unit resolution with an accuracy of ±0.1 pH unit
  • Probes calibrate using standard conductivity & pH calibration solutions
  • Manufacturer’s warranty
  • Optional 25-gal nutrient concentrate tanks sold separately ($100.50 ea.)

** This item is Available via freight shipping only. Please call 1-866-710-GROW(4769) or contact us for a quote.**
Customer service is available to assist by phone Monday-Friday, 9AM-5PM Eastern.

Weight 100 lbs


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