An Automatic pH Doser, Monitor, & Transmitter Built On A Decade Of Proven Technology With New, Enhanced Capabilities To Meet The Growing Demand For Highly Reliable Autonomous Dosing Applications
AgrowDose MPX dosing systems are autonomous pH set-point control systems consisting of a digital PHX hydroponics controller and ADi intelligent peristaltic pump. Available with 1, 2 or 4 independent pump heads. Configure each pump as a pH up, pH down or ORP part. Precision sensors and rugged pumps offer reliable and accurate control of reservoirs large and small.
Color LCD display and button interface allows instant access to sensor readings, guided calibration, alarms, historical graphing and more. Multi-recipe memory stores 14 different configurations for quick changes according to growth phase. Dose up to 6 different chemical parts. Internal memory logs over 20,000 data points per sensor.
Precision sensors and rugged pumps offer reliable and accurate control. Built with FDA compliant tubing, the pumps inject chemicals quickly into water lines up to 25psi. Long-life pump heads are easily replaced in seconds without tools. The controller's large built-in color display provides an easy to use interface for monitoring the sensor readings and configuring the dosing settings.
The PHX hydro sensor continuously monitors the sensor probes and compares the readings to “target” set points for pH and ORP (optional.) If the readings are outside of the allowed range, the pumps will sequentially dose according to the configured recipe, repeating until the targets are achieved.
Each pump has a programmable delay time to separate parts and/or add a delay between the cycles.
Included With The Mini Dosing System:
- GrowControl PHX Controller
- pH, and temperature sensors
- Available in a single, dual, or quad pump set up
- OPTIONAL: ORP Sensor
- OPTIONAL: Mounting Panel Kit (ships constructed with mounting panel, sensor manifold, and selected sensors & pumps)
The PHX can be paired with the GrowControl GCX Cultivation Control System for ultimate control of your growing operation. When paired with the GrowControl GCX Controller, you not only gain the ability to control all aspects of your facility's climate and hydroponics systems, you gain the option to run your PHX pH dosing system from the comfort of your home with remote access capabilities. Potential problems and issues are sent to you at an instant via text or email too, so you never have to worry!
Add Agrowtek’s SXL electronic optical liquid level sensor and water valve kits to the stock tank to automate the water level control and replenish the tank with water. This set up is perfect for those looking to automate their system entirely. Learn more here.
Agrowtek also offers an easy solution for firmware updates and data logging, using the Agrowtek LX1 AgrowLink. When using the LX1, you can hook your MPX system up to your pc for even more control. Learn more here.
To make sure you set your system up how you truly like and not just how you can get it, Agrowtek systems use standard MODBUS protocols and can be controlled by MODBUS devises using Agrowtek's LX2 ModLink. Learn more here.

The GrowControl PHX Controller
- 3-button/LCD display interface allows easy monitoring of sensor values.
- High / Low History
- Graphing
- Main Menu
- Alarm set points with Buzzer
- Manual pump priming
- Back-light shut-off timer
- Simple menu driven setup for configuring pump recipes, system settings, sensor calibration and more.
- The main screen displays the real-time sensor readings from the attached sensors.

AgrowDose ADi Digital Peristaltic Dosing Pumps
- Accurate & Repeatable
- Acid & Base Chemical Compatible
- Rugged Pump & Motor Works on Thick Fluids
- Easy-Change Pump Heads
- FDA Food Safe Tubing
- Industrial MODBUS Control
AgrowDose ADi series "intelligent" peristaltic dosing pumps are digitally controlled, variable speed capable next-generation pumps for use with Agrowtek's SXH hydroponics sensors as an autonomous pH & EC dosing system.

Easy Set Up
Connecting The PHX Controller & Peristaltic Pumps
A direct-link connection between a SXHM sensor and ADi pump requires Agrowtek’s cross-over adapter, included with the MDX System.
Contoller can be used as a stand alone monitor when using it's own power supply.
IMPORTANT: Only use Agrowtek's cross-over adapters. Incorrect cross-over adapters or cables can cause damage to the equipment.

Setting Up Your Pumps For Dosing
Normal pump rotation is CW. The left tube is inlet (suction) and the right tube is outlet (pressure.)
Connect tubing with barbed fittings as shown. Tubing lengths may be as long as 50ft. Check for proper flow with the prime function.
Use the LCD menus to configure each pump and the the system parameters and then put the pumps into RUN mode to begin auto dosing.
Haven't decided on your nutrient regiment yet? Check out Hydrobuilder's nutrient lineups here!

Agrowtek Sensors & Probes
Temperature Probe
- -20 to 60°C
- 3 ft
- Tinned Lead Connection
- Included with MPX System
Stainless steel probe, 1/4" diameter x 3" with 3ft lead. Made in USA

pH Probe
- 0-14 pH
- 3 ft
- BNC Connection
- Included with MPX System
High quality pH sensor probe for GXH transmitters. Made in USA.

Oxidation Reduction Potential (ORP) Probe
- -1000 to +1000 mV
- 3 ft
- BNC Connection
- Optional Upgrade for MPX System
High quality ORP (Redox) sensor probe for GXH transmitters. Made in USA

Sensor Set Up & Usage
Connecting Your Sensor Probes To The SXHM Controller
pH & ORP sensors are equipped with “BNC” style connectors; push on and then turn to lock in place.
Temperature probes have a screw terminal block. Make the connections according to the label on the transmitter. The terminal block may be removed for easier wire installation or for service.

Sensors Require Continuous Contact
MPX systems require the sensors to be continuously in contact with the water in order to properly manage the dosing pumps. Probe can be located in the reservoir tank, or may be installed inline with a continuously recirculating water flow.
pH & ORP probes must remain wet to avoid damage. Do not allow probe tips to dry!
** Manifold shown sold separately, unless mounting panel option is selected **

Typical Fertigation Layouts

**Please Note:** Panel and Sample Manifold sold separately, unless mounting panel option is selected
Sensor Specifications
Specification | Measurement |
---|---|
Power | 12-24Vdc, 5w |
Max Cable Distance | 1000ft |
Temperature Range | -20 - 60°C |
Temperature Accuracy | ±2°C, 0.01° resolution |
pH Range | 0-14pH |
pH Accuracy | ±0.02pH, 0.01pH resolution |
ORP (DO) Accuracy | ±10mV, 1mV resolution |
4-20mA Output Resolution | 12 bit , 0.005mA |
Pump Specifications
Specification | Measurement |
---|---|
Power | 12Vdc, 1Amp |
Pump Heads | Single/Dual/Quad |
Flow Rate | Variable, 15-50mL/min |
Tubing Material | FDA Approved Norprene |
Tubing Size | 1/4” O.D. x 3/16” I.D. |
Max Outlet Pressure | 20psi |
Minimum Dose Size | 1mL |
Brand | Agrowtek |
---|---|
SKU | MPX4P |
Weight (lb.) | 10.0000 |
Height (in.) | |
Prop 65 | false |
Lead Time | This product ships in 2 Weeks |
Length (in.) | |
Width (in.) | |
Warranty | 1 Year |
Hazardous Material | false |
ETL Listed | No |
UL Listed | No |