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Green 3-in-1 soil tester measures moisture, pH, and light with a dial gauge against a black background.
VIVOSUN 3-in-1 green soil tester measures sunlight, moisture, and pH. 10.8" x 1.8" dimensions.
Vivosun 3-in-1 soil tester for moisture, pH, and light. Green device with dial and probes in soil.
Vivosun 3-in-1 soil tester with dual probes measures moisture, pH, and light. Battery-free design.
Vivosun 3-in-1 soil tester in grass and soil, showing probe insertion and reading.
Green 3-in-1 soil tester measures moisture, pH, and light with a dial gauge against a black background.
VIVOSUN 3-in-1 green soil tester measures sunlight, moisture, and pH. 10.8
Vivosun 3-in-1 soil tester for moisture, pH, and light. Green device with dial and probes in soil.
Vivosun 3-in-1 soil tester with dual probes measures moisture, pH, and light. Battery-free design.
Vivosun 3-in-1 soil tester in grass and soil, showing probe insertion and reading.
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Vivosun 3-in-1 Soil Tester

Official VIVOSUN Dealer Model: WEB-305131J
$12.99 USD
  • Measures moisture on a 1 to 10 scale with 7.8 inch probes.
  • Covers a 3.5 to 8 pH range for root zone monitoring.
  • Requires no batteries for operation.
  • 2-year limited manufacturer warranty
  • View More Details

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THROUGH THE Cultivator's LENS Hands-On Evaluation

  • You are checking soil moisture before watering because the top inch of substrate often stays wet while the root zone dries out.
  • You are testing pH levels because you want to confirm your soil remains within the ideal range for nutrient uptake.

  • The analog dial is dead simple to read, and we love that you never have to scramble for fresh batteries during a check.
  • It gives you a better look at what your roots are dealing with than the old finger test.

  • Customers who use this in their containers say it stopped them from overwatering their plants by guessing.
  • Users who struggled with yellowing leaves report that identifying pH issues early helped them save their crops.

Vivosun 3-in-1 Soil Tester

Checking the top inch of soil with your finger tells you almost nothing about what's happening at the roots. That guesswork is how plants end up overwatered, underfed, or starved for light. The Vivosun 3-in-1 Soil Tester reads the root zone directly. Its dual 7.8″ probes measure moisture on a 1–10 scale, pH from 3.5 to 8, and light intensity from 0 to 2000, all on one analog dial with no batteries required.

Slide the selector to moisture, pH, or light, push the probes 2–4 inches into the soil, and read the dial after about 10 minutes. The moisture scale tells you when to water, and the pH scale shows whether your soil is trending acidic or basic before nutrient uptake suffers. The light reading helps you decide if a plant needs to move closer to a window or under a grow light.

At 10.8″ long and 1.8″ wide, the Vivosun 3-in-1 Soil Tester fits easily in a garden tote or grow-room drawer, and it works for both indoor containers and outdoor beds. It is designed for soil only and should not be used in water or other liquids.

Features

Vivosun 3-in-1 soil tester measuring moisture, pH, and light in garden soil
Vivosun battery-free soil moisture, pH and light meter with dual probes
🎚️
3 Modes, One Switch

Slide between moisture, pH, and light testing on a single analog dial.

💧
1–10 Moisture Scale

Reads dry to moist at the root zone so you know exactly when to water.

🧪
3.5–8 pH Range

Spot acidic or basic soil early to keep nutrient uptake on track.

☀️
0–2000 Light Reading

Check whether plants get adequate light, from low light to strong light.

🔋
No Battery Required

Plug-and-read analog operation means no batteries to buy, charge, or replace.

📏
Compact with 7.8″ Probes

10.8″ overall length carries easily between indoor pots and outdoor garden beds.

Specifications

Specification Value
Test Modes Moisture, pH, Light (3-position slide switch)
Moisture Range 1–10 (dry to moist)
pH Range 3.5–8 (acidic to basic)
Light Intensity Range 0–2000 (low light to strong light)
Display Analog dial
Power No battery required
Dimensions 10.8″ × 1.8″
Probe Length 7.8″
Recommended Insertion Depth 2–4″
Reading Time Approx. 10 minutes
Color Green
Intended Use Soil only (not for water or other liquids)

Warranty

The Vivosun 3-in-1 Soil Tester is covered by a 2-year limited manufacturer warranty from the original date of purchase.

Frequently Asked Questions

How do I use the Vivosun 3-in-1 Soil Tester? +

Set the slide switch to moisture, pH, or light, then insert the probes 2–4 inches into the soil. Adjust the probe position until the pointer on the dial swings slightly, then note the reading after about 10 minutes.

Why do I need to wait 10 minutes for a reading? +

The analog sensor needs time to settle in the soil before the pointer stabilizes. Reading after about 10 minutes gives you a more reliable moisture, pH, or light value than reading right after insertion.

Does the soil tester need batteries? +

No. The Vivosun 3-in-1 Soil Tester is a plug-and-read analog meter that needs no battery. There's nothing to charge or replace, so it's always ready to use.

Can I use it to test water or hydroponic solution? +

No. This tester is designed for soil only and should not be used in pure water or other liquids. For reservoirs and nutrient solutions, use a dedicated digital pH or TDS/EC meter.

How do I know when to water my plants? +

In moisture mode, the dial reads from 1 (dry) to 10 (moist). Lower readings at the root zone signal it's time to water, which helps prevent both under- and overwatering.

Can I use it indoors and outdoors? +

Yes. At 10.8 inches long, the Vivosun 3-in-1 Soil Tester is easy to carry between indoor containers and outdoor garden beds. The light mode also helps you judge whether indoor plants are getting enough light where they sit.

How should I clean the probes? +

Remove the probes from the soil and wipe them clean after each use. Keeping the probes free of soil residue helps maintain accurate readings over time.

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Questions About This Product?

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