Best TDS (Water Tester) | TDS Measurements - PH, E.C. PPM Combo Meters For Cannabis Cultivation


When it comes to growing cannabis, having the right tools is essential for achieving the best results. One of the most important tools for any grower is a pH and TDS meter. These meters are used to measure the acidity (pH) and total dissolved solids (TDS) of your nutrient solution, which can greatly impact the health and growth of your plants. But with so many options on the market, it can be difficult to know which pH and TDS meter is the best for your cannabis grow.

The first thing to consider when choosing a pH and TDS meter is the type of meter. There are two main types of pH meters: handheld and in-line. Handheld meters are portable and can be used anywhere, making them a great option for those who are always on the move. In-line meters, on the other hand, are permanently installed in a hydroponic system and are typically more accurate. Both types have their own advantages and disadvantages, so it is important to consider which one will best suit your needs.

Another important factor to consider is the accuracy of the meter. When it comes to growing cannabis, precision is key. A pH and TDS meter that is not accurate can lead to nutrient deficiencies or other problems that can harm your plants. Look for a meter that has a resolution of at least 0.1 pH and 10 ppm (parts per million) for TDS. This will ensure that you have a clear and precise reading of your nutrient solution.

It's also important to consider the ease of use of the meter. A pH and TDS meter that is difficult to use can be frustrating and time-consuming. Look for a meter that is easy to calibrate and has clear, easy-to-read displays. Many meters also come with user-friendly interfaces and built-in temperature compensation, which ensures that your readings are accurate even if the temperature of your nutrient solution changes.

In conclusion, the best pH and TDS meter for growing cannabis is one that is accurate, easy to use, and fits your specific needs. Whether you choose a handheld or in-line meter, make sure that it has a resolution of at least 0.1 pH and 10 ppm, and that it is easy to calibrate and use. By taking the time to choose the right pH and TDS meter, you can ensure that your cannabis plants are getting the exact nutrients they need to thrive.

Our Top Picks

VIVOSUN pH and TDS Meter Combo

  • Application: Great for all home and laboratory TDS & pH testing applications including aquariums, swimming pools
  • PH Meter: Full measurement range of pH 0 - 14, reliable and quick readings
  • 3-in-1 TDS Meter: Measurement Range 0-9990ppm, 0-9990µs/cm; Accuracy ± 2%, 0.1- 80.0°C, 32.0-176.0°F; Note: This meter can't test sea water
  • Features: Comes with protective case; Lightweight, handheld design for portability and convenience
  • Included: PH meter, 3-in-1 TDS meter, 3 calibration buffers

Bluelab METCOM Combo Meter

  • Monitor 3 parameters in water: Conductivity (TDS) level to ensure plants get a balanced feed, pH up and down, and temperature with lab quality glass probe; Gereral uses include growing tent, swimming pool, drinking water, and aquarium
  • This hydroponics meter has ATC that provides consistent reading regardless of any fluctuations in temperature; pH probe is double junction; Conductivity scales include EC, PPM, and CF
  • Combine with Bluelab meters and controllers for full indoor garden nutrients monitoring in water and soil; pH probe requires easy two point calibration; Conductivity and temperature probes come factory calibrated and are ready to use
  • Other features: Auto off function, low battery indicator, units for temperature; KIT INCLUDES: AAA batteries, pH probe storage cap, and calibration solution, probe care kit is sold separately
  • Made in New Zealand and manufactured by Bluelab, the industry leader in hydroponic testing equipment, built for growers; 5-Year Limited Warranty with proof of purchase (6-month warranty for probes)
  • One combined, pre-amplified pH, EC, and TDS (ppm) probe for hassle-free measurements.
  • Quick CAL mode for a speedy, single-point calibration for pH and EC with one solution.
  • Designed for hydroponic, aquaponic, and greenhouse growers.
  • Designed to bring simplicity to nutrient testing, the HI9814 Portable GroLine Meter is designed specifically for Hydroponic growers. The specialized electrode combines 3 sensors in a single rugged probe featuring a polypropylene body, integrated temperature sensor, and cloth junction.

When it comes to buying a TDS tester for your hydroponic cannabis crops, there are several key factors to consider. The first and most important thing to look for is features. Not all TDS testers are created equal, and some come with additional features like the ability to measure water temperature, pH levels, and EC levels. This can be especially useful for growers who want to keep a close eye on all the details of the water they are using for their crops.

Another important factor to consider when buying a TDS tester is cost. While many of these devices are affordable, there are some that come with higher prices. It's important to make sure that any device you're considering is worth the cost, and that it is a reliable and effective product that will last you a long time.

Accuracy is also crucial when it comes to TDS testers. Many of the devices on the market today are highly accurate, with measurement ranges of 2% or less. Some even come with additional calibration abilities for even more precision. However, it's important to note that calibrating a TDS tester should be done by a professional or someone with experience.

Another important factor to consider is portability. Many TDS testers are highly portable, but it's a good idea to look for devices that come with belts with clips, which allow you to use them hands-free while you're working on other tasks.

Reliability is also a key factor when buying a TDS tester. Look for a device that is built to last, with a sturdy construction and a secure housing cover that protects the display and other delicate electronic parts. Additionally, it's a good idea to look for a device that is waterproof, even though you will only be submerging about an inch of the device into the water.

Finally, it's important to read reviews of TDS testers before making a purchase. Compare the reviews of different devices, and go with the product that has the best reviews. Additionally, when it comes to brand name, it's a good idea to stick with well-known and reputable brands to ensure that you're getting a high-quality product.

 Check out this video about PH Meters -

 Check out the insidehydro youtube channel for full indepth growing tutorials