--- product_id: 9172043 title: "MGMLP1 Active Air 3-Way pH, Light & Moisture Meter" brand: "hydrofarm" price: "131 zΕ‚" currency: PLN in_stock: true reviews_count: 13 category: "Hydrofarm" url: https://www.desertcart.pl/products/9172043-mgmlp1-active-air-3-way-ph-light-and-moisture-meter store_origin: PL region: Poland --- # Light range 0-2000 lux Moisture scale 0-10 pH accuracy 4-9 MGMLP1 Active Air 3-Way pH, Light & Moisture Meter **Brand:** hydrofarm **Price:** 131 zΕ‚ **Availability:** βœ… In Stock ## Summary > 🌿 Grow smarter, not harder β€” the ultimate 3-in-1 garden guru! ## Quick Answers - **What is this?** MGMLP1 Active Air 3-Way pH, Light & Moisture Meter by hydrofarm - **How much does it cost?** 131 zΕ‚ with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.pl](https://www.desertcart.pl/products/9172043-mgmlp1-active-air-3-way-ph-light-and-moisture-meter) ## Best For - hydrofarm enthusiasts ## Why This Product - Trusted hydrofarm brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **Accurate Light Metering:** Light readings up to 2000 lux help optimize plant placement and growth. - β€’ **Battery-Free Reliability:** No batteries neededβ€”eco-friendly and always ready when you are. - β€’ **Triple-Check Your Garden:** Simultaneously measure moisture, light, and pH for precision plant care. - β€’ **Prevent Overwatering FOMO:** Avoid root rot and wasted water with precise moisture level monitoring. - β€’ **Indoor & Outdoor Versatility:** Durable design works seamlessly in any environment, rain or shine. ## Overview The Hydrofarm MGMLP1 Active Air 3-Way Meter is a compact, battery-free tool that accurately measures soil moisture (0-10 scale), ambient light (0-2000 lux), and soil pH (4-9 range). Designed for both indoor and outdoor use, it helps gardeners optimize plant health by preventing overwatering and ensuring ideal light and pH conditions. Its durable, easy-to-read design makes it a trusted choice for container and traditional gardening alike. ## Description Gardeners can conveniently test their moisture, light, & pH levels with the handy ActiveAir 3-WAY meter. Moisture readings register on a scale of 0 (dry) to 10 (moist), light readings range from 0 (low light) to 2000 (very strong light), & pH readings between pH 0 (acidic) & pH 10 (basic) are represented. The durable, easy-to-read tester is suitable for indoors or out & needs no batteries to operate. Review: Best of Type in price range. - I am very impressed with this tri-function gardening meter. However my comments and experience with it are restricted to its use in container gardening where soil type is fairly consistent and of good quality. The light meter functions extremely well. (Readings taken in November in Texas at 11 am) Total shade outside on a cloudy day gives ~100 rating, cloudy day inside at a window 200-300. cloudy day outside partial shade ~500 reading cloudy day no shade 800-1000 sunny day, no shade 2000 ("pegged unit") Moisture reading also seems fairly accurate. Obviously dry container not watered for 2 weeks gave a 1 Container not watered for 5 or 6 days and dry to touch down to 4" gave a 2-3 reading. Container well watered 48 hr previously gave a 5-6 reading. Container well watered previous morning gave a 8 reading. Container OVER watered 6 hrs previously gave a 10 reading. I have not tested pH meter function in a well calibrated manner, but it seems to work well, IF the instructions are followed. You cannot just stick it in soil to get the pH reading you have to do as instructions state. I took readings with "used" potting soil amending it 4 different ways and then watering mildly and leaving set for 3 days. Soil with small amount of baking soda added gave an alkaline 8 reading, Soil with nothing added gave ~7 reading Soil with small amount of vinegar added 5-6 Soil with small amount of soil acidifier gave slightly less than 5. Can't ask for much better results for an inexpensive little unit. I have owned 2 or 3 other brands of these little gadgets (without light function) none of them gave decent or even consistent results, this one does. Review: Works very well - Simple to use, very accurate ## Features - Helps prevent over watering - Provides accurate pH values from 4-9 - Sturdy and easy to use - Good for use indoors or outdoors - No batteries required ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B001UC7K6E | | Battery Description | No batteries required | | Best Sellers Rank | #443,135 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #178 in Moisture Meters | | Brand | Hydrofarm | | Color | Green | | Customer Reviews | 3.8 3.8 out of 5 stars (236) | | Department | Unisex-Adult | | Global Trade Identification Number | 00638104190251 | | Is Discontinued By Manufacturer | No | | Item Weight | 3.2 ounces | | Item model number | MGMLP1 | | Manufacturer | Hydrofarm | | Mounting Type | Freestanding | | Operating Humidity | 40% to 60% (indoor), 20% to 80% (outdoor) | | Product Dimensions | 13.25 x 3.8 x 1.2 inches | | Temperature Accuracy | 1 | | Temperature Reading Accuracy | plus_minus_0_point_5_degrees_celsius | | UPC | 638104190251 674551571984 | | Upper Temperature Rating | 40 Degrees Celsius | | Voltage | 12 Volts | ## Product Details - **Battery Description:** No batteries required - **Brand:** Hydrofarm - **Color:** Green - **Item Weight:** 0.2 Pounds - **Mounting Type:** Freestanding ## Images ![MGMLP1 Active Air 3-Way pH, Light & Moisture Meter - Image 1](https://m.media-amazon.com/images/I/414IYr0ZFIL.jpg) ## Available Options This product comes in different **Size** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Best of Type in price range. *by R***Y on November 14, 2011* I am very impressed with this tri-function gardening meter. However my comments and experience with it are restricted to its use in container gardening where soil type is fairly consistent and of good quality. The light meter functions extremely well. (Readings taken in November in Texas at 11 am) Total shade outside on a cloudy day gives ~100 rating, cloudy day inside at a window 200-300. cloudy day outside partial shade ~500 reading cloudy day no shade 800-1000 sunny day, no shade 2000 ("pegged unit") Moisture reading also seems fairly accurate. Obviously dry container not watered for 2 weeks gave a 1 Container not watered for 5 or 6 days and dry to touch down to 4" gave a 2-3 reading. Container well watered 48 hr previously gave a 5-6 reading. Container well watered previous morning gave a 8 reading. Container OVER watered 6 hrs previously gave a 10 reading. I have not tested pH meter function in a well calibrated manner, but it seems to work well, IF the instructions are followed. You cannot just stick it in soil to get the pH reading you have to do as instructions state. I took readings with "used" potting soil amending it 4 different ways and then watering mildly and leaving set for 3 days. Soil with small amount of baking soda added gave an alkaline 8 reading, Soil with nothing added gave ~7 reading Soil with small amount of vinegar added 5-6 Soil with small amount of soil acidifier gave slightly less than 5. Can't ask for much better results for an inexpensive little unit. I have owned 2 or 3 other brands of these little gadgets (without light function) none of them gave decent or even consistent results, this one does. ### ⭐⭐⭐⭐⭐ Works very well *by M***S on September 11, 2024* Simple to use, very accurate ### ⭐ Almost useless *by M***R on January 4, 2026* After trials with house and garden plants, the only measurements seem to be completely dry or completely wet. pH does not match (or come close to) litmus paper with same binary result. Not sure what light meter measures but mobile app is definitely more useful. Maybe a defective (or cheap) unit. ## Frequently Bought Together - Hydrofarm MGMLP1 Active Air 3-Way pH, Light & Moisture Meter - AC Infinity UIS Control Plug, Socket Adapter to Connect UIS Smart Controllers to Outlet Devices - AC Infinity CLOUDFORGE T3, Plant Humidifier 4.5L with VPD Humidity Controls, 10-Level Precision Vaporizer, Extendable Targeting Hose and No-Leak Seal for Grow Tents --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.pl/products/9172043-mgmlp1-active-air-3-way-ph-light-and-moisture-meter](https://www.desertcart.pl/products/9172043-mgmlp1-active-air-3-way-ph-light-and-moisture-meter) --- *Product available on Desertcart Poland* *Store origin: PL* *Last updated: 2026-04-28*