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Milwaukee MC720 PRO pH Controller and Dosing Pump Kit – Automated pH Control for Healthier Systems
In any environment where water chemistry needs to be tightly controlled – such as hydroponics, aquariums, horticultural systems, or aquaculture tanks – maintaining a stable pH is critical to the success of your setup. Fluctuations can affect nutrient availability, water quality, and the health of plants or aquatic life. That’s where the Milwaukee MC720 PRO pH Controller and Dosing Pump Kit comes in.
This professional-grade kit combines the reliable MC122 pH controller with the powerful MP810 peristaltic dosing pump, offering a hands-free solution for pH regulation. Whether you’re managing a high-demand hydroponic grow room or maintaining pH-sensitive aquatic habitats, the MC720 PRO continuously monitors your water and automatically doses a pH adjuster to keep your levels where they need to be – day and night, without interruption.
Take the Guesswork Out of pH Management
With real-time monitoring and automatic dosing, the MC720 PRO transforms reactive maintenance into proactive control. The included pH probe, controller, and pump work together to help you avoid sudden shifts in pH that could damage your system. This is particularly valuable in hydroponic nutrient tanks or aquariums with CO₂ injection, where even minor changes can lead to imbalances.
Designed with durability and ease of use in mind, the MC720 PRO is ideal for both professionals and serious hobbyists. It includes everything you need for installation: wall-mount-ready hardware, BNC-connected pH electrode, calibration solutions, and flexible tubing for dosing. This is not just a controller – it's a daily partner in maintaining ideal growing or living conditions.
Why Choose the Milwaukee MC720 PRO?
• Automatic pH Control – Continuously monitors your
pH levels and activates the dosing pump when needed to keep your water
chemistry within the desired range.
• Trusted Performance – Built on the reliable MC122 pH controller and
MP810 dosing pump, both proven in professional setups worldwide.
• Hands-Free Operation – Ideal for busy growers and aquarists who need
consistent results without constant oversight.
• Simple Setup – Includes everything you need to get started: pH
controller, dosing pump, MA911B/2 double junction pH electrode, 12V power
supplies, calibration solutions, and tubing.
• Precise and Adjustable – Set your target pH range and let the system
do the rest, automatically correcting deviations with dosing accuracy.
• Wide Application Use – Perfect for hydroponics, horticulture,
aquariums, aquaculture systems, and anywhere that requires stable pH control.
Applications
Hydroponics and Nutrient Tanks
In hydroponic systems, maintaining precise pH levels is crucial for nutrient uptake. The MC720 PRO automates pH adjustments, ensuring optimal conditions for plant growth. Its peristaltic pump delivers accurate dosing, making it ideal for hydroponic nutrient tanks.
Aquariums and Aquaculture
For aquariums, especially those with CO₂ injection systems, and aquaculture setups, stable pH levels are vital for aquatic life health. The MC720 PRO provides continuous pH monitoring and automatic adjustments, safeguarding fish and coral environments.
Horticulture and Fertilization Systems
In horticultural practices, especially those involving fertigation, the MC720 PRO ensures that the pH of fertilization solutions remains within the desired range, promoting efficient nutrient absorption and plant health.
Overall, the Milwaukee MC720 PRO is a versatile tool suitable for any application requiring consistent and automated pH control in aqueous solutions.
Proper Care & Maintenance
To ensure long-term accuracy and reliable performance of your Milwaukee MC720 PRO pH Controller and Dosing Pump Kit, proper care of the pH probe and dosing system is essential. Most performance issues in pH meters arise from the electrode – specifically the glass sensing bulb and the reference junction – so regular maintenance can significantly extend the life of your equipment.
Understanding the Probe
- Sensing Bulb: The glass bulb is responsible for detecting pH changes. Over time, it naturally loses sensitivity and will eventually need replacement. This is a normal part of all pH probe lifecycles.
- Reference Junction: This small porous junction allows electrical contact between the reference solution and the sample. If the junction becomes clogged, the probe can no longer provide accurate readings.
How to Extend Electrode Life
- Calibrate Regularly: Perform two-point calibrations with quality pH buffer solutions (pH 7.01 and 4.01) to maintain precision.
- Clean the Electrode: Rinse the probe with distilled water after each use. Periodically clean it using proper cleaning solutions to remove buildup that can clog the junction or coat the sensing bulb.
- Store Properly: Always keep the pH electrode moist. Never let it dry out, as this can permanently damage the sensing bulb and clog the reference junction.
- Use the Right Solution: Store the probe in pH electrode storage solution (MA9015) or a pH 4.01 calibration buffer. Never store in distilled or tap water, which can degrade the probe’s performance.
- Use the Cap: Fill the probe’s cap with storage solution or buffer and tighten it securely to prevent evaporation. Ideally, store the electrode upright to minimize leakage.
- Inspect Tubing and Pump: Check the dosing pump tubing periodically for wear or buildup. Replace tubing as needed to ensure consistent and accurate pH adjustment.
- Ensure Secure Installation: Mount the controller and pump securely in a location protected from excessive humidity and splashing to prevent electrical or mechanical issues.
With regular maintenance and proper handling, your Milwaukee MC720 PRO will deliver reliable, automated pH control for years to come – helping you maintain optimal water quality with minimal manual intervention.
Take control of your water chemistry and gain peace of mind with the Milwaukee MC720 PRO – a smart, fully automated solution designed to maintain optimal pH levels around the clock. Whether you're growing nutrient-hungry plants in a hydroponic system or caring for delicate aquatic life, the MC720 PRO ensures consistency, reduces manual work, and protects your long-term investment in water quality. Precision, reliability, and ease – working together so your system can thrive.
Specifications
MC122 SPECIFICATIONS
Range: 0.0 - 14.0 pH
Resolution: 0.1 pH
Accuracy: ±0.2 pH
Set point: 5.5 to 9.5 pH
Calibration: Manual 2 points
Alarm Active when reading is higher or lower than set point
Dosing Contact: 1 power plug for CO2 dosing
pH electrode: MA911B/2 (included)
Environment: 0 to 50°C / 32 to 122°F; max RH 95%
Power Supply: 12 VDC adapter (included)
Power Drivers: 115 VAC, 2A, 60Hz or 230 VAC, 1A, 50Hz
Mounting kit (Included)
Dimensions: 5.9 x 3.2 x 1.35 inches
Weight: 6.3 ounces (meter only)
MP810 SPECIFICATIONS
Max. Flow: 0.6 L/h
Max. Pressure: 1.5 bar
Squeeze tubing: Santoprene
Ext. Tube connection: 6 mm
Power supply: 240 VAC, 50-60 Hz or 110 VAC, 60 Hz
Power consumption: 0.42 W
Dimensions: 100 x 106 x 108 mm
Weight: 17.6 oz.
Application
Hydroponics and Nutrient Tanks
In hydroponic systems, plants rely entirely on nutrient-rich water instead of soil to absorb the essential elements they need for growth. However, nutrient uptake is heavily influenced by the pH of the solution. If the pH drifts outside the optimal range – typically between 5.5 and 6.5 – many nutrients become unavailable to the plants, even if they are present in the water. This can lead to nutrient deficiencies, stunted growth, or poor yields.
The Milwaukee MC720 PRO pH Controller and Dosing Pump Kit solves this challenge by automatically monitoring and adjusting the pH in your nutrient tank. The MC122 controller continuously measures the pH level in real-time using a professional-grade electrode. When the pH strays from your set target range, the MP810 dosing pump is triggered to deliver a precise amount of pH-adjusting solution (usually a pH down acid) directly into the reservoir.
This hands-free automation prevents fluctuations, eliminates the need for constant manual testing and corrections, and helps maintain the stable environment plants need to thrive. It's especially useful in recirculating systems, where pH can shift quickly due to nutrient absorption and microbial activity.
Whether you're growing leafy greens, herbs, tomatoes, or cannabis, the MC720 PRO ensures your hydroponic system runs smoothly with consistent pH control – maximizing plant health, nutrient absorption, and productivity.
How to Use the MC720 PRO in Hydroponics
- Install the pH Controller
· Mount the MC122 pH Controller on a wall or stable surface near your nutrient tank. Avoid placing it in a high-humidity or splash-prone area.
· Connect the MA911B/2 pH electrode to the controller and insert the probe into your nutrient reservoir or a recirculating line using a probe holder or grommet.
- Connect the Dosing Pump
· Mount the MP810 peristaltic pump securely.
· Insert one end of the included tubing into a container of pH-adjusting solution (commonly pH Down). Insert the other end into your nutrient reservoir.
· Make sure the pump tubing is securely connected and free of air bubbles or blockages.
- Set Your Desired pH Range
· Use the controller’s dial to set the lower and upper pH limits. When the pH goes above this range, the controller will activate the pump to deliver acid to lower the pH.
- Calibrate the pH Probe
· Perform a two-point calibration using pH 7.01 and 4.01 buffer solutions. This ensures accurate readings.
· Repeat calibration regularly based on usage frequency (weekly in high-use systems).
- Power On and Monitor
· Plug in both the controller and the dosing pump using the included 12V power supplies.
· Monitor the LCD display on the MC122 to check current pH readings. The system will automatically adjust the pH as needed within your set range.
- Regular Maintenance
· Refill your pH solution container as needed.
· Clean the electrode regularly and store it properly when not in use.
· Inspect tubing for wear and replace it if necessary.
With the MC720 PRO, maintaining ideal pH conditions in hydroponics becomes easy, accurate, and automated – so you can focus on growing, not troubleshooting. Let your plants enjoy uninterrupted nutrient access and deliver the yields you’re aiming for.
Aquariums and Aquaculture
In both aquariums and aquaculture systems, maintaining a stable pH is essential for the health, behavior, and survival of aquatic life. Fish, corals, crustaceans, and beneficial microorganisms are all sensitive to pH fluctuations. Even minor, frequent swings can lead to stress, disease, poor growth, or even death.
Saltwater and reef aquariums, in particular, require tight pH control, typically between 8.1 and 8.4, especially in systems with CO₂ injection for planted tanks or calcium reactors. In freshwater aquariums or breeding tanks, stable and species-specific pH levels support proper development and reduce aggressive behavior or reproductive issues.
In aquaculture – whether for fish farming or shellfish cultivation – water quality is directly tied to productivity. pH shifts can impact oxygen levels, ammonia toxicity, and metabolic function in aquatic animals, ultimately affecting your yields and profitability.
The Milwaukee MC720 PRO ensures around-the-clock monitoring and pH adjustment through a reliable, automated system. The MC122 controller tracks pH in real time, while the MP810 dosing pump adds acid or base as needed to maintain your desired pH range. This eliminates the guesswork, reduces manual intervention, and helps create a consistently healthy aquatic environment.
Whether you're running a home reef tank, a professional breeding system, or a commercial aquaculture facility, the MC720 PRO helps protect your aquatic investment with precision and peace of mind.
How to Use the MC720 PRO in Aquariums and Aquaculture
- Set Up the pH Controller
· Mount the MC122 pH controller in a dry, splash-protected area near your aquarium or sump.
· Connect the MA911B/2 pH probe to the controller and place it securely in your tank or sump using a probe holder or suction cup. Avoid positioning it near CO₂ injection or dosing points to prevent false readings.
- Install the Dosing Pump
· Mount the MP810 pump nearby on a secure surface.
· Attach the input tubing to your pH-adjusting solution (e.g., a buffer or acid/base solution depending on whether you need to raise or lower pH).
· Place the output tubing into your sump or return section – somewhere with high water flow for even distribution.
- Calibrate the pH Probe
· Perform a two-point calibration using fresh pH 7.01 and 4.01 buffer solutions.
· Calibration is essential for accurate pH readings and should be done at least monthly or whenever readings seem inconsistent.
- Set Your Desired pH Range
· Use the dial on the MC122 controller to define your ideal pH range (for example, 8.2 as your target in a reef aquarium).
· When the pH drifts outside of this range, the controller activates the pump to dose your correction fluid and bring pH back in line.
- Power On and Monitor
· Plug in the controller and pump. Monitor the live pH readings on the LCD display.
· The system will automatically maintain your set pH range without manual adjustments.
- Routine Maintenance
· Keep the probe clean by rinsing with distilled water and storing it in storage solution (MA9015) when not in use.
· Inspect and replace dosing tubing as needed to prevent clogging or wear.
· Refill your pH adjustment solution as necessary.
· Recalibrate the probe regularly for best results.
With the Milwaukee MC720 PRO, aquarium and aquaculture enthusiasts gain a powerful tool for maintaining the water quality their aquatic life depends on. By automating pH control, you reduce stress on your livestock, support biological balance, and avoid the headaches of manual dosing.
Horticulture and Fertilization Systems
In professional horticulture, particularly in fertigation systems where nutrients are delivered via irrigation, maintaining the correct pH of the nutrient solution is crucial. pH affects the solubility and availability of essential nutrients – a solution that is too acidic or too alkaline can lock out key elements like nitrogen, phosphorus, or potassium, leading to nutrient deficiencies, stunted growth, and reduced crop yield.
Different crops have optimal pH ranges (commonly between 5.5 and 6.5), and even small deviations can significantly impact plant performance. Manual pH adjustment in large-scale systems is not only time-consuming, but also inconsistent – especially when water quality fluctuates or when fertilizer recipes change.
The Milwaukee MC720 PRO takes the guesswork out of pH management in fertigation. This system includes the MC122 pH controller, which continuously monitors the pH of your fertilization tank or irrigation line, and the MP810 dosing pump, which adds acid (or base) automatically to correct any drift outside your set range.
This automation leads to more uniform nutrient delivery, improved uptake, and healthier plants, making it a valuable tool for greenhouses, nurseries, vertical farms, and field-scale fertigation systems.
How to Use the MC720 PRO in Horticulture and Fertigation Systems
1. Mount the pH Controller
· Install the MC122 controller in a dry location near your fertigation mixing tank or dosing panel.
· Connect the MA911B/2 pH probe and place it into the tank or directly into a flow-through cell on your irrigation line for continuous measurement.
2. Install the Dosing Pump
· Secure the MP810 pump near the controller.
· Connect the input tube to your acid solution (commonly phosphoric or nitric acid) or base solution, depending on your water source and target pH.
· Place the output tube into the mixing tank or inline dosing point.
3. Calibrate the pH Probe
· Perform a two-point calibration with pH 7.01 and 4.01 buffer solutions.
· Recalibrate regularly (e.g., weekly or bi-weekly) to maintain precision in environments with high fertilizer concentrations.
4. Set the Target pH
· Use the dial on the MC122 to set your target pH value, such as 5.8 for tomatoes or 6.0 for leafy greens.
· The controller will activate the pump to add acid/base automatically when the pH drifts beyond your set value.
5. Begin Operation
· Power on the system and monitor the live pH readings on the MC122 display.
· The MC720 PRO will continuously maintain your desired pH range, adjusting in real-time as irrigation and fertilization cycles run.
6. Maintain the System
· Rinse the probe with distilled water and store in MA9015 storage solution when not in use.
· Inspect the tubing for wear, and replace as needed to ensure precise chemical delivery.
· Keep the acid/base solution container filled and secure.
· Check calibration routinely, especially after cleaning or heavy system use.
By integrating the Milwaukee MC720 PRO into your horticultural fertilization system, you can automate a critical variable – pH control – that directly affects crop quality and yield. This not only saves time and labor but also enhances consistency, giving you healthier plants and more predictable results season after season.
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