Aqua Master P110 Pro — Budget-Friendly 3-in-1 pH, EC & Temperature Combo Meter
Best for: Growers who need reliable nutrient monitoring without paying premium brand prices
Our thoughts
This is a proper handheld combo meter that does what it should without the Bluelab price tag. Three measurements in one device, waterproof, replaceable electrode, and it arrives calibrated and ready to use. One we sell a lot of for growers stepping up from guesswork to actual numbers.
The Aqua Master P110 Pro is a handheld 3-in-1 digital meter that measures pH, EC (electrical conductivity), and temperature in one compact pen. Built for hydroponics, aquaponics, and nutrient solution monitoring, it's the kind of practical kit that takes the guesswork out of feeding your plants. Waterproof, robust, and significantly cheaper than premium competitors, it gives you accurate spot-checks without the premium brand markup.
How it compares
This sits squarely in the mid-range segment of combo meters for indoor growers.
- Measures three parameters at once (pH, EC, temperature) — no juggling separate devices
- Waterproof IP67 housing and floats if dropped — built for real-world growing environments
- Roughly 65-70% cheaper than Bluelab Combo Meter with adequate accuracy for hobbyist operations
- Replaceable electrode means you're not replacing the whole meter when the probe wears out
- Dry electrode storage — no faffing about with storage solutions
Compared to budget meters under £50, you're getting better build quality and more reliable readings. Compared to Bluelab or Hanna GroLine, you're trading lab-grade precision for a tool that actually makes financial sense.
Usage guidance
Using the P110 Pro is straightforward. Here's how growers typically use it:
Daily nutrient checks
Press the power button, insert the meter vertically into your nutrient solution up to the line, stir gently, and wait a few seconds for the reading to stabilise. Press the MODE button to switch between pH and EC. That's it — no storage liquid needed, no waiting around.
Calibration routine
The meter arrives fully calibrated and ready to use. When calibration is needed (typically every 1-2 months with regular use), you can run a quick two-point pH calibration (4.0-7.0 pH range) and one-point EC calibration (1.4 EC). Both are automatic and take minutes.
Temperature compensation
Built-in temperature sensor automatically compensates for readings — nutrients behave differently at different temperatures, so this keeps your measurements honest. Switch between Celsius and Fahrenheit with the C/F button depending on your preference.
Mobile monitoring
IP67 waterproof rating and compact size mean you can carry it between growing spaces, spot-check your mix before each feed, and not worry if it gets damp. If it gets dropped in water, it floats.
Technical specifications
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Measurement ranges: pH 0.1–14.0 | EC 0.0–19.9 mS/cm | Temperature 0–50°C
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Resolution: pH ±0.1 | EC 0.1 mS/cm | Temperature 0.1°C
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Accuracy: pH ±0.1 | EC ±2% of full scale | Temperature ±0.5°C
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Calibration: Two-point auto pH (4.0–7.0) | One-point auto EC (1.4)
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Power: 3 x AG-13 button cell batteries (included)
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Auto shutdown: After 8 minutes of inactivity
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Waterproof rating: IP67 (waterproof, floats)
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Electrode: Replaceable (user-serviceable)
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Storage: Dry storage — no liquid required
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Dimensions: 220 x 40 x 40mm
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Weight: 102 grams
Who this is for
- Hydroponic and aquaponic growers who currently eyeball or guess their nutrient levels
- Experienced growers looking to cut monitoring costs without sacrificing reliability
- Anyone stepping up from basic pH strips to proper digital measurement
- Growers with multiple spaces who need a portable, durable meter they can carry around
- Budget-conscious operators who want combo functionality (pH + EC + temp) in one device
Particularly suited to setups where practical accuracy matters more than laboratory-grade precision — which is most home and small commercial operations.
Our take
The P110 Pro does the job it's designed for: giving you quick, reliable readings of your nutrient solution without the premium price. It's waterproof, it's portable, and the electrode is replaceable so you're not throwing away the whole meter in a few years. Arrives calibrated and ready to use, which saves hassle on day one.
Good time to buy while stock lasts. If you're tired of guessing pH and EC, or you're replacing an old meter and don't fancy dropping two hundred quid on a Bluelab, this is worth picking up.
