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Best DIGITAL PH METERS FOR AQUARIUMS

At Aquarium Accessories Reviews, we take pride in our rigorous review process. Each product is handpicked based on market research, personally tested by our experienced team for functionality and durability, and evaluated for value for money. Alongside our hands-on experience, we also consider real user feedback. This meticulous approach ensures we provide honest, transparent, and comprehensive reviews to guide your aquarium accessory purchases.

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VIVOSUN Digital PH Meter for Water, 0.05ph High Accuracy Pen Type PH Tester for Hydroponics, Household Drinking, Pool and Aquarium

VIVOSUN Store

3.9
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2 in 1 Temperature pH Monitor Meter Tester Sensor Test Kit 0~14 pH Automatic Calibration BNC Electrode Probe for Hydroponics Aquarium Lab Testing Food Drinking Water pH of Saltwater/seawater

TEKCOPLUS Store

4.1
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Digital Combo pH & Temperature Meter, Aquarium Thermometer pH Monitor with Automatic Calibration Function for Fish Tank Hydroponics Aquaculture Laboratory

Gain Express Store

4.2
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VIVOSUN PH Meter Digital PH Tester Pen 0.01 High Accuracy Water Quality Tester with 0-14 PH Measurement Range for Household Drinking, Pool and Aquarium, with ATC, Army Green

VIVOSUN Store

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AERO-GRO Digital 5-in-1 Meter: 5 Functions: pH, TDS, EC, Salinity%, Salinity ppm, and Temp, IP67 Waterproof, Pen-Type Tester for Hydroponics, Water, Wine, Spas, Aquariums

Brand: Aero-Gro

4.2
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YINMIK YK-P01 pH Tester Digital pH Meter for Water Hydroponics, Accurate pH Temp Meter with ATC for Pool, Spa, Hot Tub, Indoor Plants, Drinking Water, Wine Beer Home Brewing, Aquarium

YINMIK Store

4.4
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YINMIK pH Salt ORP Tester, Digital pH Meter for Aquarium, 7 in 1 pH TDS EC Salt ORP S.G Temp Pool Salt Tester for Spa,Hot Tub,Home Brewing,pH ppm EC Meter for Hydroponics,ORP Meter for Drinking Water

YINMIK Store

3.7
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YINMIK Digital pH Meter with Extra Replaceable Probe, Pocket pH Tester for Hydroponics, Accurate Water Tester for Swimming Pool Hot Tub Aquariums Home Wine Brewing

YINMIK Store

4.3
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YINMIK Digital Soil pH Meter for Gardeners, Soil Direct pH Tester for Plant Care, Measure pH of Solution Potting Soil Growing Media,Great for Indoor,Greenhouse,Outdoor,Garden, Lawn, Farming, Yard Use

YINMIK Store

4.3
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Digital pH/TDS Meter with ATC pH Tester, 3 in 1 0.01 Resolution High Accuracy pH Pen Tester for Water with LCD Backlit, Tds Meter pH Meter for Drinking Water, Wine, Pool and Aquariums

PmoYoKo Store

4.4

We will continue to update this buyer's guide once a month or two.

The best DIGITAL PH METERS FOR AQUARIUMS in 2024 - Detailed Product Descriptions

1. VIVOSUN Digital PH Meter for Water, 0.05ph High Accuracy Pen Type PH Tester for Hydroponics, Household Drinking, Pool and Aquarium

By VIVOSUN Store

VIVOSUN Digital PH Meter for Water, 0.05ph High Accuracy Pen Type PH Tester for Hydroponics, Household Drinking, Pool and Aquarium

Application: Ideal for residential or commercial use, water, pool, spas, liquid food, laboratory, aquaculture and hydroponics
Easy Calibration: Advanced technology makes the test result fast and accurate; LCD screen makes reading clearly
Features: Pocket size, lightweight, backlit function, high quality
ATC Function: With Automatic Temperature Compensation (ATC), adjust to water temperature and give pH reading almost instantly
What You Get: VIVOSUN pH meter, user manual, 2 x 1.5V button cells (built in), 3 x pH buffer powders

2. 2 in 1 Temperature pH Monitor Meter Tester Sensor Test Kit 0~14 pH Automatic Calibration BNC Electrode Probe for Hydroponics Aquarium Lab Testing Food Drinking Water pH of Saltwater/seawater

By TEKCOPLUS Store

2 in 1 Temperature pH Monitor Meter Tester Sensor Test Kit 0~14 pH Automatic Calibration BNC Electrode Probe for Hydroponics Aquarium Lab Testing Food Drinking Water pH of Saltwater/seawater

[Accurate Test] With a sensitive electrode sensor ph tester with 0-14.0 measuring range could read accurate pH level quickly and easily. This accurate pH tester Kit (0.01 Resolution) is so accurate that it could test accurately within ± 0.01 pH. Enclosed with detailed clear manual will show you how to use it.
[Automatic Temperature] This PH meter has built-in automatic temperature compensation system (ATC) which can accurately determine the PH value of the sample at any water temperature.
[Simple Calibration] Three kinds of pH buffer powder are included for conditions requiring recalibration, such as long period of inactivity.
[Power ] The display is powered by an alkaline 4 x AA battery. After about 5 minutes, it will go into power saving mode. Thus, it can have at least 3 months of battery life.
[Wide application] You can use this tool to monitor the pH and Temperature of any type of water may it be in your aquarium, swimming pool, spa, laboratories, hospitals, hydroponics, agricultural, industrial, and also field water analysis procedure.

3. Digital Combo pH & Temperature Meter, Aquarium Thermometer pH Monitor with Automatic Calibration Function for Fish Tank Hydroponics Aquaculture Laboratory

By Gain Express Store

Digital Combo pH & Temperature Meter, Aquarium Thermometer pH Monitor with Automatic Calibration Function for Fish Tank Hydroponics Aquaculture Laboratory

FEATURES: Large screen monitor with smart backlight which allows you to read easily even in dark sorroundings. pH and Temperature display with low battery indicator and the unit operates power saving mode.
Multi-points Calibration: Up to 3 Points PH calibration (pH 7.0 / pH 4.01 / pH 10.01). It has advance one touch calibration function with automatic buffer recognition to avoid errors.
ATC (Automatic Temperature Compensation): The monitor has ATC function so it will decrease the error of PH readings caused by the fluctuation of water temperature.
HIGHLY ACCURATE MEASUREMENT: It has separate probe. When taking a measurement, simply place your probes into the solution and and then the accurate readings will be displayed on screen.
POWER SOURCE: The monitor is operated with 4 x AA Alkaline Battery. It will go into power saving mode after around 5 minutes. In this way, it can provide battery life time for at least 3 months.

4. VIVOSUN PH Meter Digital PH Tester Pen 0.01 High Accuracy Water Quality Tester with 0-14 PH Measurement Range for Household Drinking, Pool and Aquarium, with ATC, Army Green

By VIVOSUN Store

VIVOSUN PH Meter Digital PH Tester Pen 0.01 High Accuracy Water Quality Tester with 0-14 PH Measurement Range for Household Drinking, Pool and Aquarium, with ATC, Army Green

High Accuarcy: Tester has a sensitive electrode sensor to read accurate PH levels; the included detailed manual will show you how to get the best accurate and stable reading
Easy to Calibrate: Press CAL for 5 seconds to enter the calibration mode, press in turn to select the powders corresponding to 6.86, 4.01, and 9.18 to complete the calibration
Easy to Carry: Pocket size, lightweight, handheld design for portability and convenience
LCD Digital Display: Easy to use no matter in the day and night environment, and accurate measurement and clear display results
Widely Used: Ideal for Household or commercial use, water, pool, spas, liquid food, laboratory, aquaculture and hydroponics

5. AERO-GRO Digital 5-in-1 Meter: 5 Functions: pH, TDS, EC, Salinity%, Salinity ppm, and Temp, IP67 Waterproof, Pen-Type Tester for Hydroponics, Water, Wine, Spas, Aquariums

By Brand: Aero-Gro

AERO-GRO Digital 5-in-1 Meter: 5 Functions: pH, TDS, EC, Salinity%, Salinity ppm, and Temp, IP67 Waterproof, Pen-Type Tester for Hydroponics, Water, Wine, Spas, Aquariums

[5-in-1 pH METER] - Meter has a five-in-one function, which can measure PH, TDS, EC (Electrical Conductivity), Salinity %, Salinity ppm, and Temperature - with high precision every time. All-round measurement of water quality to ensure consistent results.
[Accurate pH Tester] - Featuring a solid glass probe, you can get a full measurement range of 0-14pH, 0.01 pH resolution. The pH meter uses a 3-point calibration for maximum accuracy, and includes extra calibration powder.
[TDS Measurement] - Fast and accurate TDS / PPM testing for hydroponics or anywhere TDS is critical. The TDS Range is 0~10,000ppm. Accuracy is ±2%.
[EC Measurement] - Measure Electrical Conductivity of either fresh or salt water.
[Saline % and Saline ppm Measurement] - Conveniently and easily keep track of saline levels by either percentage or ppm. Great for aquarium, saltwater pools, saltwater spas or anywhere salt levels are critical.
[Temperature Compensation] - The pH meter auto-calibrates to the sample liquid temperature, which guarantees accuracy regardless of temperature.
[Numerous Applications] - This meter can measure TDS, EC, and pH in fresh water situations, and can measure Salinity % and Salinity ppm in saltwater situations, such as saltwater pools, spas and aquariums. It can also be used to measure drinking water, RO System, spa, soap mixtures, food, wine, beer or any other liquids.

6. YINMIK YK-P01 pH Tester Digital pH Meter for Water Hydroponics, Accurate pH Temp Meter with ATC for Pool, Spa, Hot Tub, Indoor Plants, Drinking Water, Wine Beer Home Brewing, Aquarium

By YINMIK Store

YINMIK YK-P01 pH Tester Digital pH Meter for Water Hydroponics, Accurate pH Temp Meter with ATC for Pool, Spa, Hot Tub, Indoor Plants, Drinking Water, Wine Beer Home Brewing, Aquarium

[Large Horizontal Screen Display] Tired of using yellow ones with small vertical reading display? YINMIK YK-P01 pH meter screen is designed for horizontal display, pH and temperature value can be read simultaneously which makes your job easier and more comfortable
[Wide Application] Excellently Use YINMIK PH Meters to measure the pH in your pool and spa; to monitor your indoor garden nutrients in water and soil and Check pH when mixing media for tissue culturing ; to get a decent idea of your mash ph when brewing beer or wine; to monitor your aquarium water conditions and test pH of your koi ponds water; to measure pH of your well water , alkaline tap water and other drinks .
[Accurate pH Tester with Effective ATC] Built with stainless steel temperature sensor, YK-P01 pH meter has an effective temperature compensation (ATC) function, which ensures the rapid response and accurate test results.
[Easy Calibration for YINMIK pH Tester] Supporting 3-point auto calibration, following the instruction manual can easily achieve 4.00, 7.00, 10.01 auto calibration. Don't worry about the calibration solution, you can easily configure up to 500ml of calibration solution for each standard using the calibration powder included in the package. In addition, you can also purchase calibration powder from the YINMIK store on Amazon at an affordable price.
[More User-friendly Designs] Backlights ensures you can use the product in a dimly lit working environment. HOLD/TEMP button can be used for reading lock, attribute to this function, the reading will not disappear after the pH meter leaves the test solution.

7. YINMIK pH Salt ORP Tester, Digital pH Meter for Aquarium, 7 in 1 pH TDS EC Salt ORP S.G Temp Pool Salt Tester for Spa,Hot Tub,Home Brewing,pH ppm EC Meter for Hydroponics,ORP Meter for Drinking Water

By YINMIK Store

YINMIK pH Salt ORP Tester, Digital pH Meter for Aquarium, 7 in 1 pH TDS EC Salt ORP S.G Temp Pool Salt Tester for Spa,Hot Tub,Home Brewing,pH ppm EC Meter for Hydroponics,ORP Meter for Drinking Water

[7 in 1 Digital pH TDS EC Meter] YINMIK YK-7 water quality tester can measure pH, TDS, EC, ORP, S.G, Sat and temperature with high precision at the same time which is a convenient and reliable manner for most regular water solutions' testing.
[pH and Salt Meter for Aquarium] Water quality of the fishpond is extremely important. Slight changes in pH, temperature or salinity may lead to serious consequences. YINMIK YK-7 water tester is expert in aquarium, testing pH, temp, salinity, tds. Save money and time for you.
[Salt Tester and pH ORP Meter for Pool&Spa] YINMIK YK-7 digital water quality meter is the ideal measuring instrument for every swimming pool owner who values optimal water quality. The YINMIK water pH tester combines ease of use and reliability with a compact design. It has pH, Temp, ORP and Salt functions, which can meet the daily monitoring of pools, spa, or hot tub.
[Digital pH EC ORP Meter for Hydroponics] Hydroponics is one of the most common applications for pH, TDS/EC meters. YINMIK YK-7 multi-parameter tester is an invaluable tool for measuring how far away your water is from needing more nutrients, a small boost, or to be completely changed out. Every gardener should have a YINMIK water quality tester with the accurate, stable, and convenient performance.
[ORP Tester Digital for Drinking Water] Potable water is everywhere but be careful of what you drink. Water with a positive oxygen reduction potential (ORP) cannot be drink as water with a high or low pH. ORP, TDS and pH levels are generally taken care of in processed and filtered water. YINMIK YK-7 water quality tester integrates the functions of pH, TDS and ORP, which perfectly meets people's daily needs for drinking water.

8. YINMIK Digital pH Meter with Extra Replaceable Probe, Pocket pH Tester for Hydroponics, Accurate Water Tester for Swimming Pool Hot Tub Aquariums Home Wine Brewing

By YINMIK Store

YINMIK Digital pH Meter with Extra Replaceable Probe, Pocket pH Tester for Hydroponics, Accurate Water Tester for Swimming Pool Hot Tub Aquariums Home Wine Brewing

[Buy One Get One Free as Bonus] An additional probe of YINMIK YK-2 pH Meter is included in the package in case the original one is accidentally damaged. With one calibration for the replacement, you can have a brand-new pH tester again. Greatly extend the life of the tester
[More Accurate & Faster] With low impedance, YINMIK pH sensor ensures the probe high response rate. Premium temperature sensor makes the temperature compensation (ATC) fast and accurate. Never worry about waiting too long for the correct reading
[Meet all Your Needs] Perfectly used for checking pH value of Hydroponics Nutrient Solution, Home Drinking Water, Swimming Pool/ Hot Tub Water, Aquarium/ Fish Tank Water. Monitoring pH on Home Wine/ Beer/ Juice brewing, Aeroponics, Ro System, Aquaculture and so on
[Easy Calibration] Supporting 3-point auto calibration, following the instruction manual can easily achieve 4.00, 7.00, 10.01 auto calibration. Don't worry about the calibration solution, you can easily configure up to 500ml of calibration solution for each standard using the calibration powder included in the package. In addition, you can also purchase calibration powder from the YINMIK store on Amazon at an affordable price
[Packing List] YINMIK YK-2 pH Meter*1; YINMIK Replaceable Electrode for YK-2 pH Meter*1; 1.5V LR44 battery*3; Calibration buffer powder*6; English instruction*1

9. YINMIK Digital Soil pH Meter for Gardeners, Soil Direct pH Tester for Plant Care, Measure pH of Solution Potting Soil Growing Media,Great for Indoor,Greenhouse,Outdoor,Garden, Lawn, Farming, Yard Use

By YINMIK Store

YINMIK Digital Soil pH Meter for Gardeners, Soil Direct pH Tester for Plant Care, Measure pH of Solution Potting Soil Growing Media,Great for Indoor,Greenhouse,Outdoor,Garden, Lawn, Farming, Yard Use

{Great Soil Direct pH Meter for All Growers} Tired of making slurries or mixing up soil solution? Can’t get any change from dial pointer after inserting two probes into soil? YINMIK soil pH meter will provide a new experience of soil pH test. Just stick probe into the soil, immediately obtain the accurate pH value. If you are a hydroponics expert, there is no need another tester to measure pH of the nutrient solution, YINMIK soil pH meter can meet your requirements both soil and liquid tests
{Powerful Digital Soil pH Tester for Avid Gardeners}YINMIK Soil pH Tester is equipped with a new sensitive spear tip electrode which can obtain the pH value of the soil quickly and accurately. A tapered stainless-steel dibber that can be firmly attached to the pH pen, ensuring your tester could measure all types of soil without worrying about damage to the electrode. YINMIK even provides an extra electrode for free to buyers to ensure that our fans can use the tester for a long time
{Smart Digital Soil pH Monitor Kit for Serious Growers}Download the YINMIK App to connect with the soil pH meter and set up automatic data storage, so you can leave your tester in the soil for a long time, and just check the stored data on your phone to know the change of your soil pH value instantly. Besides, you can explore more useful functions on YINMIK app
{More Practical Functions of YINMIK Soil pH Meter}Backlight function ensures you can use the product in a dimly lit working environment. HOLD/TEMP button can be used for reading lock. Automatic temperature compensation (ATC) function ensures the accurate test results anywhere all the season. 3-point auto calibration make the calibration job easy and convenient.
{Wonderful Soil pH Tester Kit as a Garden Gift}What you can get from the package include: YINMIK Soil pH Meter*1; YINMIK Replaceable Electrode for YINMIK Soil pH Meter*1; Tapered Stainless Steel Dibber*1; Clean Brush*1; 1.5V LR44 battery*3; Calibration buffer powder*6; English instruction*1.; dropper *1; In addition, we provide 90-days free return and 12-hours respond for any question about the product

10. Digital pH/TDS Meter with ATC pH Tester, 3 in 1 0.01 Resolution High Accuracy pH Pen Tester for Water with LCD Backlit, Tds Meter pH Meter for Drinking Water, Wine, Pool and Aquariums

By PmoYoKo Store

Digital pH/TDS Meter with ATC pH Tester, 3 in 1 0.01 Resolution High Accuracy pH Pen Tester for Water with LCD Backlit, Tds Meter pH Meter for Drinking Water, Wine, Pool and Aquariums

【3-in-1 pH Meter】pH meter for water has a three-in-one function, which can measure PH, TDS and temperature with high precision at the same time. All-round measurement of water quality to ensure healthy water quality.
【Automatic Calibration pH Water Tester】With high sensitive glass probe, you can get a full measurement range of 0-14pH, 0.01 pH resolution. And pH meter for water uses a 3-point calibration method to calibrate the electrode to solutions of pH 4.00, pH 6.86, and pH 9.18. You can calibrate effortlessly to ensure the accuracy of your measurements.
【High Accuracy pH Meter for Water】High-accuracy algorithm chip and electrode of our digital water ph meter ensure accurate and fast response. Green Backlit LCD Design guarantees that you can read the measuring results in any condition. One-button lock reading function helps lock reading even if the tds Meter is taken out of the sample!
【Pocket Size pH Meter for Water】 You can use this small Pocket Size but powerful pH meter device to measure your aquarium, pool, pond in a garden, bath tub to test the levels of pH value. The digital ph meter can also be used to measure drinking water, RO System, spa, soap mixtures, wine, beer or any other liquids.
【pH Meter to Improve Water Quality】This pH/TDS meter can help you find out quality water value. Water with equal pH, TDS levels are perfect for people's daily needs for drinking water.And for plants and aquaculture animals, they can grow more fast and health is they drink good quality pH, TDS value of the water.

author img Lucas Carter

Our Editor-in-Chief, Lucas Carter, brings over twenty years of hands-on experience in the world of aquaristics. He is not just an expert in aquarium keeping but also a passionate advocate for the hobby. Lucas's extensive knowledge of aquarium accessories, understanding of different aquatic ecosystems, and a keen eye for product quality set the standard for our reviews. His personal commitment is to guide both novice and experienced aquarium enthusiasts through the vast ocean of products, helping them create the ideal environment for their aquatic friends.