Automatic Digital pH Controller Kontrol – Prosystem Aqua · Precise Dosing & Stability

The Automatic Digital pH Controller Kontrol by Prosystem Aqua is the ultimate tool to automate the acidity management of your irrigation tank, ensuring your plants absorb 100% of the nutrients without you lifting a finger. It is a high-precision device that measures and corrects pH levels in real-time, guaranteeing a stable environment for explosive growth.

Is your pH fluctuating and driving you crazy?

We know the feeling: you prepare your nutrient tank, adjust the pH, and two hours later it has drifted again. You spend more time measuring and adding drops than actually taking care of your plants. The uncertainty of not knowing if your crop is absorbing food correctly or if the acidity is blocking the roots creates unnecessary stress and inconsistency in your results.

If you don't solve this, the consequences are clear: nutrient lockout. It doesn't matter if you use the best cannabis fertilizers on the market; if the pH isn't right, the plant can't eat. This leads to deficiencies, stunted growth, and a disappointing harvest, making you feel like the equipment isn't working when the real issue is chemical stability.

The solution is to stop guessing and start automating. The Kontrol pH Controller takes the guesswork out of the equation. It constantly monitors the water and injects the exact amount of regulator needed to keep the pH at your target setpoint. It transforms a chaotic chore into a precise, set-and-forget phase of your cultivation.

Phase 1: Preparing the ground

Before installing the controller, you need to ensure your setup is ready. This device is professional gear, and it requires a stable environment to function correctly. Don't rush; a good setup ensures years of trouble-free operation.

• Check your tank volume: Ensure your reservoir is clean and has enough capacity for the pump's flow rate (40 ml/h).
• Choose your regulator: Decide if you need pH Down (acid) or pH Up (alkaline) based on your water's natural tendency.
• Prepare the calibration solution: The kit includes pH 7 solution. Have it ready and at room temperature.
• Plan the location: The device needs to be close to the tank but safe from splashes (despite its IP65 protection).
• Power supply: Ensure you have a stable outlet nearby (100-240V).

Phase 2: Setting up the product

Now, let's get the Kontrol unit ready to work. This process connects the "brain" (the controller) with the "muscle" (the pump) and the "senses" (the probe).

1. Mount the bracket: Fix the connection bracket to the wall or a stable surface near your tank.
2. Install the tubes: Connect the suction tube (from the acid bottle) and the delivery tube (to the tank) to the peristaltic pump. Note the flow direction arrow.
3. Connect the probe: Carefully remove the protective cap from the BNC electrode and connect it to the controller. Handle it with care; it's glass!
4. Calibrate: Dip the probe into the pH 7 solution. Use the calibration screw/button until the screen reads exactly 7.0. This is crucial for accuracy.
5. Install the injector: Place the injection valve into your irrigation line or tank so the acid mixes instantly with the water.

Phase 3: Use / growing step by step

With everything installed, it's time to let the machine do the work. This is how your routine changes with the Kontrol system active, especially if you are running drip irrigation systems.

1. Power on: Turn on the device. The LCD screen will light up and show the current pH reading.
2. Set the Setpoint: Adjust the desired pH value (e.g., 5.8 for hydro or 6.2 for soil).
3. Prime the pump: Ensure the acid fills the tube up to the injector so the first dose is immediate.
4. Observation: Watch the first cycle. If the pH is higher than your setpoint, the pump will activate (you'll see the wheel turning) to dose acid.
5. Stabilization: The pump doses slowly (drop by drop) to avoid overshooting. Wait for the reading to stabilize.
6. Routine check: You no longer need to measure manually, just glance at the screen to confirm the number is correct.
7. Refill acid: Keep an eye on your pH Down bottle level so the pump never runs dry.

Phase 4: Closing, maintenance and learnings

To keep the Kontrol accurate (± 0.01 pH), maintenance is key. The probe is a living component that wears out over time. Every month, check the calibration with a fresh buffer solution. If the reading drifts, recalibrate. If it's slow to respond, clean the tip with a soft brush and water.

When you finish a crop cycle, never let the probe dry out. Store it in storage solution (KCL) or pH 4 buffer. Also, check the peristaltic tubes; thanks to the Transaxle Technology, they last longer, but they are consumables and should be inspected for cracks or wear to prevent leaks.

Advantages of following this flow instead of improvising

• Total Consistency: Your plants always drink at the same pH, eliminating stress.
• Nutrient Efficiency: Prevents "lockout," ensuring every gram of fertilizer is used.
• Time Freedom: You save hours of manual measuring and adjusting every week.
• Error Reduction: No more accidental overdosing of acid that ruins the tank.
• Professional Results: Essential for high-performance hydroponic and aeroponic systems.

Frequently Asked Questions

Does it work for both raising and lowering pH?

Yes, the controller can be configured to dose either acid (pH Down) or alkaline (pH Up), depending on what your water needs, though most growers use it to lower pH.

How often should I change the probe?

With good maintenance, a probe can last a year or more. However, it is recommended to replace it every 6-12 months to maintain maximum precision.

Can I use it with any nutrient brand?

Absolutely. The controller manages the acidity of the water regardless of the fertilizer brand you use.

Is it waterproof?

It has IP65 protection, which means it is protected against dust and low-pressure water jets, but it should not be submerged.

Personal Experience of Pevgrow’s CEO (Alan)

"I remember when I started with hydroponics, I was a slave to the pH meter. I would adjust it in the morning, and by the afternoon it had skyrocketed, messing up the plants' feeding. It was frustrating. Since I installed the Kontrol system, that anxiety disappeared. I set it to 5.8, and I know it stays there."

"My advice: don't skimp on calibration. I do a quick check every two weeks. It takes 5 minutes and ensures the machine is reading correctly. Also, place the injector downstream from the probe so the reading is always of the mixed water, not the concentrated acid. It's a small detail that changes everything."