Best pH Meter For Weed

Best pH Meter For Weed: 9 Accurate & Reliable Options

Ok, so you are planning on growing some of your own cannabis plants, maybe inside or outdoors, it really does not matter. However, before you can get started, there are some essential tools and pieces of equipment that you will need to have in your marijuana growing arsenal.

One of the things that you will definitely need is a pH meter for your weed. Now, just to be clear, you can get pH meters for the soil which your pot is growing in, as well as for the water you are feeding your plants. As you will find out later on, having the ideal pH soil and water level is crucial to the healthy growth, survival, and overall productivity of your plant.

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Our Top Pick
yoyomax Soil Test Kit pH Moisture Meter Plant Water Light Tester Testing Kits Garden Plants
Alotpower 3-in-1 Soil Tester Meter, Moisture, pH,Light Meter Plant Tester for Indoor and Outdoor Gardener or Planter
Sonkir Soil pH Meter, MS02 3-in-1 Soil Moisture/Light/pH Tester Gardening Tool Kits for Plant Care, Great for Garden, Lawn, Farm, Indoor & Outdoor Use (Green)
Product
yoyomax Soil Test Kit pH Moisture Meter Plant Water Light Tester Testing Kits Garden Plants
Alotpower 3-in-1 Soil Tester Meter, Moisture, pH,Light Meter Plant Tester for Indoor and Outdoor Gardener or Planter
Sonkir Soil pH Meter, MS02 3-in-1 Soil Moisture/Light/pH Tester Gardening Tool Kits for Plant Care, Great for Garden, Lawn, Farm, Indoor & Outdoor Use (Green)
Price
$9.99
$7.98
$8.99
Our Top Pick
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yoyomax Soil Test Kit pH Moisture Meter Plant Water Light Tester Testing Kits Garden Plants
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yoyomax Soil Test Kit pH Moisture Meter Plant Water Light Tester Testing Kits Garden Plants
Price
$9.99
Image
Alotpower 3-in-1 Soil Tester Meter, Moisture, pH,Light Meter Plant Tester for Indoor and Outdoor Gardener or Planter
Product
Alotpower 3-in-1 Soil Tester Meter, Moisture, pH,Light Meter Plant Tester for Indoor and Outdoor Gardener or Planter
Price
$7.98
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Sonkir Soil pH Meter, MS02 3-in-1 Soil Moisture/Light/pH Tester Gardening Tool Kits for Plant Care, Great for Garden, Lawn, Farm, Indoor & Outdoor Use (Green)
Product
Sonkir Soil pH Meter, MS02 3-in-1 Soil Moisture/Light/pH Tester Gardening Tool Kits for Plant Care, Great for Garden, Lawn, Farm, Indoor & Outdoor Use (Green)
Price
$8.99

Last update on 2019-10-15 / Affiliate links / Images from Amazon Product Advertising API

A good pH meter for weed is not something you want to go without, and it is what we are here for today. Let’s get to it and help you find the best pH meter for weed, and we will also discuss what exactly pH is, what the ideal level for your weed plants is, how to measure and adjust the pH level, and more.

The 9 Best pH Meter’s For Weed Growers

Here we have what we think are the very best pH meters out there. Now, keep in mind that when it comes to growing pot and the pH, you can test the soil which the plants are in, as well as the water you feed your plants.

So, therefore today we are going to look at some of the best pH meters for water as well as some pH meters for soil. Let’s get right to it!

1. Sonkir Soil pH Meter

Sonkir Soil pH Meter, MS02 3-in-1 Soil Moisture/Light/pH Tester Gardening Tool Kits for Plant Care, Great for Garden, Lawn, Farm, Indoor & Outdoor Use (Green)
  • INDUSTRY-LEADING WARRANTY: We promise 12-Month Hassle Free Money Back or Free New Replacement guarantee if you receive the defective products or have any questions before you decide to leave a negative feedback or review !
  • 3-IN-1 FUNCTION: Test soil moisture, pH value and sunlight level of plant with our MS02 meter, quickly helps you specialize in grasping when you need to water your plant, control the pH value in the soil and know about whether it gets adequate sunlight. Kindly NOTE: The pH function of this soil tester can not be applied to test pH value of any other liquid.
  • ACCURATE AND RELIABLE: Premium Double-needle Detection Technology strongly enhances the speed and accuracy of detecting and analyzing soil moisture and pH acidity, refuse to be a killer of plants, promote plant growth in a healthy way.
  • EASY TO USE: No batteries needed, just insert the sensor probe into the soil about 2-4 inches, toggle switch to test moisture, pH, sunlight you would like to measure, then wait for a few minutes till the pointer stops swinging to get a stable reading on the scale dial. If the plant is very dry, the soil pointer will not swing, that means your plant needs water.
  • INDOOR & OUTDOOR USE: Design to be lightweight and portable, easy to carry around for outdoor use, ideal soil test tool kit for home plants, garden, lawn and farm.

Last update on 2019-10-15 / Affiliate links / Images from Amazon Product Advertising API

Here we have a really nice pH meter for soil, but it is actually more than just a soil pH meter. The Sonkir Soil pH Meter is a 3 in 1 pH, moisture, and sunlight meter. It’s always nice when you can get a tool that performs more than one job.

This thing is exceedingly easy to use, and it does not even require batteries. Simply stick the probes about 3 inches down into the soil, and you will get the readings of your choice.

With a simple toggle switch, you can choose between measuring the pH of the soil, soil moisture levels, and sunlight levels too. The Sonkir pH Meter is very accurate, especially when it comes to measuring soil moisture and acidity.

This thing is lightweight, portable, and can be used for both indoors and outdoor marijuana growing purposes. Keep in mind that the pH range of this particular meter is between 3.5 and 8, but this should be more than enough.

If your soil is anywhere under 3.5 or 8, your plants might already be dead, as of course the proper pH level for weed soil is 6.


2. Yoyomax Soil Test Kit

yoyomax Soil Test Kit pH Moisture Meter Plant Water Light Tester Testing Kits Garden Plants
  • Cut the guess work altogether and make your plants much happier. You will know what your plant need when and why; your plants will be healthier and growing.
  • 3 in 1 design (Moisture/pH/Light Tester) provides you a comprehensive idea about the soil condition of your garden and lawn. With a quick check, you can tell if you need to adjust the plant food/water and if your plants get enough sunlight.
  • No batteries or electricity needed, ready to use out of box. Plug and read, making gardening easier than ever.
  • Compact and portable for indoor/outdoor use. A necessity for anyone who gardens or has houseplants, it will come in handy whenever you grow an interest in gardening.
  • 100% SATISFACTION GUARANTEE: We take pride in delivering top quality products and offering our friendly 12 Months Warranty PLUS 30 days money back guarantee for any reason. You can contact us through clicking "Sold by" on the product detail page or your Amazon order page and you will be directed to "Ask a question" to send us message.

Last update on 2019-10-15 / Affiliate links / Images from Amazon Product Advertising API

Here we have another very reliable and versatile pH meter for your marijuana soil, plus more. Just like the previous option we looked at, the yoyomax Soil Test Kit is actually a 3 in 1 pH, moisture, and light testing kit.

Being able to measure the moisture of the soil as well as the pH level in a single go, with a single too, is pretty convenient no doubt. Moreover, just like the previous product we looked at, this thing does not require any batteries or electricity whatsoever.

You simply have to stick the probes of the yoyomax Soil Test Kit a few inches deep into the soil and let it do its job. Just use the toggle switch to choose between measuring light, pH, or moisture.

The needle dial on the display will then provide you with a very accurate measurement of the soil parameter you have chosen to measure. Keep in mind that you need to leave the probes in the soil for about 10 minutes before you can take a reading of any kind.

The yoyomax Soil Test Kit is an exceedingly simple and affordable pH meter for weed to go with, yet still a very accurate and reliable one as well.


3. Gain Express Soil Ph & Moisture Meter

Gain Express Soil Ph & Moisture Meter 295mm Long Electrode
  • Soil pH measuring range : 3 - 8 pH
  • SOIL PH TESTER. Helps you measure and control PH level in soil
  • Accuracy : ± 0.2 pH
  • EASY TO USE! No need or preparation; you simply plug the probe of our soil testing tool in the soil area you want to check and get an accurate and precise reading! Find out what your garden or lawn needs with our soil test kit
  • NO BATTERY REQUIRED. No batteries or electricity needed, plug and read

Last update on 2019-10-15 / Affiliate links / Images from Amazon Product Advertising API

This is another very simply to use pH meter for your weed soil. Now, unlike the two previous models we have looked at, the Gain Express Soil Ph & Moisture Meter only measures pH and moisture, but not sunlight.

However, when it comes to your weed plants, actually measuring the level of sunlight with one of these things is not all that important. After all, the other two meters we looked at, when measuring light, simply tell you if it is dark or light.

Anyway, this particular meter is also very easy to use. Simply stick it in the soil a few inches deep, wait for about 10 minutes, and then you can take a pH reading of the soil.

Moreover, if you want to measure the moisture of the soil, simply press the single button that can be found on this thing, wait for a few minutes, and then take the readout for soil moisture.

The Gain Express Meter has a pH range between 3 and 8, which should be more than enough for any marijuana soil, and the accuracy of this pH meter is +/- 0.2, which is not too shabby either.


4. Jellas Soil pH Meter

Jellas Soil pH Meter 3-in-1 Soil Moisture Meter Moisture Sensor Sunlight pH Soil Test Kits for Home and Garden, Indoor/Outdoor Plants - Silver
  • 3-In-1 Soil Moisture Meter -- 3 in 1 soil tester features moisture meter, pH acidity measurement and light sensor function, allow you to adjust the moisture/pH/Light level accordingly
  • Easy to Use(No Battery Needed) -- Just toggle switch to moisture/ pH/ light position, stick the probe into the soil, then you are able to know & adjust the condition of your plant, no battery needed
  • Accurate Soil pH Meter -- Moisture Range: 1-10 (1-3 Dry, 4-7 Nor, 8-10 Wet), Relative Light: 0-2000lux (0-200 Low, 200-500 Low+, 500-1000 Nor, 1000-2000 High), pH Range: 3.5-8ph (3.5-6.5 Acid, 7-8 Alkaline)
  • Both Indoor & Outdoor Use -- A-must-have soil test tool for outdoor & indoor plants, help you to get an idea of what the plant is currently getting in terms of sunlight/water/pH acidity, then you could adjust it accordingly to keep all your plants beautiful and healthy
  • What You Will Get from Us -- 3 In 1 Soil Moisture Meter; 45-Days Money Back & 18-Month Quality Warranty, Friendly Customer Service

Last update on 2019-10-15 / Affiliate links / Images from Amazon Product Advertising API

Yes, as you might have noticed, all of these pH meters for soil are fairly similar in terms that they do not need power, that they are very simple to use, affordable, and quite reliable too.

All of these things also apply to this Jellas Soil pH Meter. For one, the Jellas Soil pH Meter can be used for both indoor and outdoor marijuana grow operations, which is nice no doubt. Moreover, this item does not require batteries or a plug of any kind.

All you have to do is choose which parameter you want to test for using the toggle switch. That is right, the Jellas Soil pH Meter is another model that can measure the pH, moisture, and light level.

The needle dial at the top, inside of the display, will inform you of the pH level of the soil, the moisture level of the soil, and the light level too. Yeah, it takes about 10 minutes for the readings to be accurate and final after have stuck the probe a few inches into the ground, but 10 minutes is not long to wait and this thing could really not be any easier to use.


5. Alotpower 3-in-1 Soil Tester Meter

Alotpower 3-in-1 Soil Tester Meter, Moisture, pH,Light Meter Plant Tester for Indoor and Outdoor Gardener or Planter
  • Plant Survey Instrument Tester: Measure soil moisture, pH and light by just plugging in the soil.
  • Scientifically Accurate: Easy to read moisture, pH and light levels, grows healthy plants.
  • No Battery Required: No batteries or electricity needed, plug and read. Do not put this meter into water for testing.
  • Ideal Tool for Plant Tester: Compact and portable design for indoor/outdoor use. Let you know your soil: when to water, control pH level, determine if plant getting adequate light.
  • Note:If the Soil Meter's pointer does not rotate with the side you check for your plants, maybe the probe did not reach the plants root of the soil, please make sure 2/3 probe put into the soil for testing. If for moisture testing, It did not work, maybe it means that your plant is dry, keep watering to make it react on the right side on the pointer. Because different plants have different reaction time with this meter, please kindy wait for serveral minutes to work for your plants.

Last update on 2019-10-15 / Affiliate links / Images from Amazon Product Advertising API

This here is actually a very popular and trusted pH tester meter for soil, and it can be used for marijuana, herb gardens, flower gardens and more, not to mention that it can be used both indoors and outdoors too.

It is quite the versatile pH meter. Not only does it accurately test for soil pH level, so your plants can stay in prime condition, but it also measures the moisture level of the soil, as well as the amount of light at soil level.

This meter is known for being very accurate and reliable, to within 0.1 pH, which is pretty impressive, and its ability to test for moisture is just as accurate.

Moreover, just like the other models we have looked at so far, simply stick the probes a few inches into the soil, use the toggle switch to choose between moisture, pH, and light, wait for about 10 minutes, then use the needle dial display at the top to get the final reading.

It really does not get much easier than that.


6. Cakie Digital pH Meter

Last update on 2019-10-15 / Affiliate links / Images from Amazon Product Advertising API

Now we are switching gears, because up until now, all products we have looked at were pH meters for soil, but now we are going to look at some pH meters for water, such as this Cakie Digital pH Meter.

Of course, testing the water for pH is very important too, which is where this particular product comes in. Now, the Cakie Digital pH Meter is about as easy to use as can be. All you have to do is turn it on, press the automatic calibration button, stick the front of the probe in the water, and the digital display will tell you the exact pH level of the water you are about to feed your marijuana plants.

The automatic calibration feature is very important because it adjust its sensitivity based on the water temperature, and yes, the temperature of the water can affect pH readings, so this is crucial indeed.

The Cakie Digital pH Meter has a full pH range of 0 to 14 and has an accuracy rating of +/- 0.1 pH, which is quite impressive no doubt. You can use this thing to test the pH of your drinking water, plant water, the pool, and everything in between.


7. VANTAKOOL Digital Pocket pH Meter

Digital PH Meter, 0.01 PH High Accuracy Pocket Size PH Meter/PH Tester with 0-14.0 Measuring Range, Water Quality Tester for Household Drinking Water, Swimming Pools, Aquarium
  • WIDE USE: Pocket Size PH Meter is the ideal test kit for home and laboratory uses. Ideal use to test for water, pools, aquariums, spas, hydroponics, food, wine and beer making and more.
  • FAST AND ACCURATE: Ensure your pool, general hydroponics ph or even drinking water has a perfect pH balance and safe for use with VANTAKOOL Tester precision pH accuracy. VANTAKOOL 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
  • AUTOMATIC TEMPERATURE COMPENSATION: No more need to take care about the temperature of testing liquid, as ph meter has built in (ATC) automatic temperature compensation, so that it can accurately determine pH value of the sample at any temperature in a range of 0°C - 80°C (32°F - 176°F)
  • AUTO CALIBRATION: The PH meter has an auto temprature compensation feature that adjusts to water temperatures and water quality to give pH readings almost instantly. As well, you can calibrate the tester with one touch button using VANTAKOOL Buffer Powder.
  • MAKE YOU SATISFIED WITH THE PRODUCTS: Come with 1 PH meter, 1x user manual, 2x 1.5V LR44 button cells(built-in), 3x PH Buffer Powders.

Last update on 2019-10-15 / Affiliate links / Images from Amazon Product Advertising API

Here we have another very accurate and affordable pH meter for water, one that can be used to test the pH level of the water you are feeding your plants, your pool and hot tub, your drinking water, and so much more.

It’s a nice little all around pH meter for water. For one, it is very small and portable, so if you have a lot of water to test, it’s no big deal.

Just like the product we just looked at above, this pH Meter comes with an auto calibration feature to calibrate itself for water temperature so that it can get super accurate pH readings no matter the temperature of the water.

The pH range of this meter goes from 0 to 14 and it features an accuracy rating of +/- 0.01 pH, which is about as good as possible. This thing is also very simply to use.

All you have to do is stick the meter into the water, turn it on, press the automatic calibration button, and wait for a moment until the digital display tells you the exact pH level of the water.


8. Vminno Digital PH Meter

Last update on 2019-10-15 / Affiliate links / Images from Amazon Product Advertising API

Here we have another very nice, simple, accurate, and affordable water pH meter that you can use to test the pH level of the water you are feeding your cannabis plants, your drinking water, pool water, aquarium water, and more.

The Vminno Digital PH Meter uses simple batteries that can be replaced whenever they run out. Just like the other water pH meters we have reviewed above, the Vminno Digital PH Meter is exceedingly simple to use.

All you have to do is stick it in the water, turn it on, press the calibration button, and then wait for the digital display to inform you of the water pH level. Yes, this pH meter does come with an automatic calibration setting to ensure that water temperature does not affect the pH readout.

Moreover, this PH Meter has a pH readout range of 0 to 14, which is the full necessary range, plus it is accurate to within 0.01 pH, which is of course super impressive and about as good as can ever be expected.


9. Apera Instruments pH Pocket Tester

Apera Instruments AI311 PH60 Premium Waterproof pH Pocket Tester, Replaceable Probe, ±0.01 pH Accuracy, -2.00-16.00 pH Range
  • Accuracy: 0.01 pH; range: -2.00 to 16.00 pH, 32 to 122˚F (0 to 50˚C); Auto. Power-Off: 8 minutes without operation
  • Easy 1-3 points auto. calibration, recognizes 5 types of solutions (1.68, 4.00, 7.00, 10.01, 12.46); Auto Temp. Compensation (ATC) ensures accuracy in various temperatures (32-122˚F)
  • High quality replaceable glass pH probe, suitable for regular water solutions e.g. pools&spas, hydroponics, environmental monitoring, cooling towers, beverage, etc.
  • Large LCD with 3 backlit colors (indicating different modes), dual display of temp./pH, and reminders of completed calibrations and stable readings
  • The smiley icon indicates stable readings so you won't have to guess when is the right time to record the measurements

Last update on 2019-10-15 / Affiliate links / Images from Amazon Product Advertising API

Now, what it pretty cool about this particular pH meter for water is that not only does it test the pH level of the water, but it can also measure the temperature, which we think is really cool, pun totally intended.

Anyway, the Apera pH Pocket Tester is in fact one of the most reliable options out there right now when it comes to testing water pH. This thing can be used for testing pool water, aquarium water, drinking water, for hydroponics, and yes, for the water you are feeding your cannabis plants too.

It comes with a high quality glass probe that can be replaced when it wears out. The Apera pH Pocket Tester does feature automatic calibration to adjust itself based on the temperature of the water, so it can always get accurate pH readings no matter the temperature, plus of course it also measures the water temperature at the same time.

This meter has an extremely wide pH range, as well as a wide temperature range, plus it is also one of the most accurate options around.


Marijuana & pH – Important Questions & Tips

Yes, testing the pH level of your marijuana soil and water is very important. Here we have some of the most pressing questions and tips in relation to this, so you know exactly what needs to be done when it comes to testing and adjusting the pH level of the soil and water which your cannabis plants are growing in.

What is pH?

pH stands for the “power of hydrogen” and it is a measure of how acidic or basic (alkaline) water is, or in this case, water or soil. The pH scale goes from 0 to 14, with 0 being extremely acidic, something like battery acid, and 14 being extremely basic, and this would be something like bleach or drain cleaner.

Normal water has a pH level of 0, which is neutral, and therefore neither basic nor acidic. This is very important to know when it comes to growing marijuana.


What Is The Ideal pH Level For Marijuana?

The whole reason you need a pH meter for your marijuana plants is of course because they require a specific pH level in order to survive and thrive.

For your marijuana soil, the ideal pH level is a solid 6.0, which is slightly acidic.

Now, you do have a bit of leeway here, as marijuana plants can survive in a pH level as low as 5.8 or as high as 6.3, but 6.0 is the ideal pH level which will provide your cannabis plants with the best chance at survival, growth, and to produce a high yield.


Why Is pH Important For Cannabis Growth?

Having the proper pH level for your marijuana plants is indeed crucial to their survival and it will determine how big of a yield you will get when all is said and done.

Remember what we talked about above, that the ideal pH level for marijuana is 6.0. Well if the pH is either way too high or too low for your cannabis plants, the root system is going to suffer.

With a pH level that is way too high or low, the roots stop working efficiently, and therefore they will not have the ability to absorb moisture and nutrients out of the dirt, thus leading to serious moisture and nutrient deficiencies in the marijuana plant.

In extreme cases, if the soil or water is extremely basic or acidic, you might just outright destroy the root system and kill the plant, so having the proper pH level for weed is super important.


How To Adjust the pH level For Ideal Marijuana Growth?

Well, the only way to really adjust the pH level for your weed plants is to do so manually. There are a number of different products out there specifically designed to alter the pH level of water for plant growth.

Some of the most popular products that come to mind include “pH+” and “pH-”, and as you can probably tell by the name, one of these products is intended to increase the pH level of the water, and the other to decrease the pH level of the water. Keep in mind that most potting soil for weed that you buy should already be pH balanced.

Now, changing the pH level of the soil itself is not really doable per day, but what you can do is adjust the pH level of the water, which you then feed into the soil, which will then change the pH level of the soil.

For example, if the soil has a pH level of 7, and you are looking to achieve a pH level of 6 in the soil, you might want to adjust the water you are feeding the plants to a pH level of a little over 5, in order to bring the pH level of the soil down.

This is not a precise instructional, as doing this does take some practice and trial and error, but after a while, you will get the hang of it.


Should I Test The Water, Soil, Or Both For pH?

Well, when it comes down to it, you should test both the soil and the water for pH. Of course, the soil which your cannabis plants are living in needs to have a pH level between 5.8 and 6.3, so you do need to test the soil to ensure that it is within those specific parameters.

However, even if your weed soil is sitting at a solid 6.0 pH, you do still need to test the water which you are feeding your plants.

If the water has a very high or low pH level past the acceptable range, even if the soil is currently at the ideal level, once you water your plants with water that does not have an acceptable pH level, you are going to change the soil pH level.

Therefore, the water you feed your plants also needs to have the right pH level, or else you are going to mess everything up.


Conclusion

Ok guys, please, whatever you do, remember to always check the pH level of your weed’s soil on a very regular basis, and never forget to check the water which you are using to feed your plants either. (if you need help finding the right soil, then check out this helpful guide that covers the essentials).

You need to stay on top of this because having the right pH level for your cannabis plants is absolutely essential to their healthy growth, development, and survival as a whole. If you are looking for a reliable pH meter for soil and/or water, we would definitely recommend checking out one of the options which we have reviewed above.

Photo Credit: Gihan Jayaweera [CC BY-SA 3.0], via Wikimedia Commons

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