{"product_id":"aqua-master-h600-pro-substrate-meter","title":"Aqua Master H600 Pro Substrate Meter - pH \u0026 EC Tester for Coco \u0026 Soil","description":"\u003ch2\u003eTest pH and EC Right in the Root Zone with the Aqua Master H600 Pro Substrate Meter\u003c\/h2\u003e\n\u003cp\u003eWhat's in your watering can isn't always what's around the roots. The \u003cstrong\u003eAqua Master H600 Pro Substrate Meter\u003c\/strong\u003e pushes spike probes straight into soft, moist media to read \u003cstrong\u003epH, EC, PPM, TDS and temperature\u003c\/strong\u003e where it matters, accurate to ±0.1 pH. It's built for coco, compost, potting mix and grow bags, and it reads liquids too.\u003c\/p\u003e\n\u003ch3\u003eWhy You Need It\u003c\/h3\u003e\n\u003cp\u003eSalts build up in media between feeds and pH drifts as plants feed, so a perfect mix going in can turn into something quite different at the roots. Run-off testing gives you a clue. A probe in the media gives you the answer.\u003c\/p\u003e\n\u003cp\u003eBoth spike probes plug in separately, the pH probe on a BNC connector (a twist-lock plug) and the EC probe on a small pin, so when one wears out you only replace that one.\u003c\/p\u003e\n\u003ch3\u003eIs the H600 Pro Substrate Right for Your Setup?\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHand watering in coco or soil:\u003c\/strong\u003e check the root zone directly instead of guessing from the can.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFirm or compacted soil:\u003c\/strong\u003e it still works, but make a pilot hole first so you don't stress the glass tip.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMostly testing reservoirs?\u003c\/strong\u003e The standard \u003ca href=\"https:\/\/www.onestopgrowshop.co.uk\/products\/aqua-master-h600-pro-handheld-meter\"\u003eH600 Pro Handheld Meter\u003c\/a\u003e comes with liquid probes instead.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eHow the H600 Pro Substrate Works\u003c\/h3\u003e\n\u003cp\u003eThe pH probe has a glass tip in a tough plastic body, and the EC probe is stainless steel. Push them into moist media and the meter reads both, with ATC (automatic temperature compensation) correcting from 0 to 50°C. pH calibrates automatically at 4.0 and 7.0, EC at 1.413 mS\/cm, and a reminder appears after 30 days.\u003c\/p\u003e\n\u003ch3\u003eKey Benefits\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eRoot zone readings:\u003c\/strong\u003e test the media itself, not just what goes in or runs out.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStainless steel EC spike:\u003c\/strong\u003e built to be pushed into media, day after day.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeparate probes:\u003c\/strong\u003e swap the one that wears out and keep the other.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFive readings:\u003c\/strong\u003e pH, EC, PPM, TDS and temperature from one meter.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWorks in liquids too:\u003c\/strong\u003e check your feed before it goes on, then the media after.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHOLD button and carry case:\u003c\/strong\u003e freeze a reading and keep the kit protected between tests.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eContains\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1 x H600 Pro handheld meter\u003c\/li\u003e\n\u003cli\u003e1 x pH substrate probe with BNC connector\u003c\/li\u003e\n\u003cli\u003e1 x EC substrate probe with small pin connector\u003c\/li\u003e\n\u003cli\u003e1 x Carry case and 9V battery\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eNot included: \u003ca href=\"https:\/\/www.onestopgrowshop.co.uk\/products\/aqua-master-calibration-solutions-100ml\"\u003ecalibration solutions\u003c\/a\u003e and \u003ca href=\"https:\/\/www.onestopgrowshop.co.uk\/products\/growth-technology-ph-probe-refill-storage-solution-300ml\"\u003eKCl storage solution\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eH600 Pro Substrate Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003epH\u003c\/th\u003e\n\u003ctd\u003e0.1 to 14.0 pH, ±0.1 pH\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eEC\u003c\/th\u003e\n\u003ctd\u003e0.0 to 19.9 mS\/cm, ±2% of full scale\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eTDS\u003c\/th\u003e\n\u003ctd\u003e0 to 19.99 ppt\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003ePPM\u003c\/th\u003e\n\u003ctd\u003e0 to 1,999 (700 scale)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eTemperature\u003c\/th\u003e\n\u003ctd\u003e0 to 50°C, ±0.5°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eCalibration\u003c\/th\u003e\n\u003ctd\u003epH automatic 2-point (4.0 and 7.0), EC automatic 1-point (1.413 mS\/cm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eProbes\u003c\/th\u003e\n\u003ctd\u003epH glass tip in plastic body, EC stainless steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eWaterproof rating\u003c\/th\u003e\n\u003ctd\u003eProbes IP67, meter IP62 (splash resistant)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003ePower\u003c\/th\u003e\n\u003ctd\u003e1 x 9V battery, included\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSize and weight\u003c\/th\u003e\n\u003ctd\u003e210 x 120 x 60mm, 430g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eWarranty\u003c\/th\u003e\n\u003ctd\u003e1 year meter, 6 months probes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eHow To Use the H600 Pro Substrate\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003eSoak the pH probe:\u003c\/strong\u003e before first use, stand it in tap water for at least 12 hours.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCalibrate:\u003c\/strong\u003e pH in 7.0 then 4.0 buffer, EC in 1.413 solution.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTest moist media:\u003c\/strong\u003e push both probes into the media near the roots. In firm soil, make a pilot hole first.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRead and hold:\u003c\/strong\u003e let the numbers settle, then press HOLD to note them.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClean and store:\u003c\/strong\u003e wipe off the media, rinse, and store the pH probe with a few drops of KCl storage solution in its cap.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003e\u003cstrong\u003eTop tip:\u003c\/strong\u003e Test the same pots in the same spot each time. Media readings vary across a pot, so consistency gives you a trend you can trust rather than numbers that jump around.\u003c\/p\u003e\n\u003ch3\u003eFAQs\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eCan I test dry media?\u003c\/strong\u003e\u003cbr\u003eNo. The probes need soft, moist media to get a reading, so test after watering, not when the pot is bone dry.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan I use liquid probes with this meter?\u003c\/strong\u003e\u003cbr\u003eYes. It takes Aqua Master's standard pH and EC probes too, so one meter can cover media and reservoir. See our \u003ca href=\"https:\/\/www.onestopgrowshop.co.uk\/products\/aqua-master-replacement-probes\"\u003eAqua Master replacement probes\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs the meter waterproof?\u003c\/strong\u003e\u003cbr\u003eThe probes are IP67. The meter body is IP62, so it's splash resistant only.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNeed help choosing?\u003c\/strong\u003e Call our growing experts on 01782 749955 or visit One Stop Grow Shop Stoke at Fenton Trade Park.\u003c\/p\u003e\n\u003cp\u003eStop guessing what's going on at the roots. \u003ca href=\"https:\/\/www.onestopgrowshop.co.uk\/collections\/grow-tools-slash-accessories-meters\"\u003eBrowse our full range of pH and EC meters\u003c\/a\u003e.\u003c\/p\u003e","brand":"AQUA MASTER","offers":[{"title":"Default Title","offer_id":57511637909882,"sku":null,"price":224.99,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0762\/6368\/6447\/files\/AquaMasterToolsH600ProHandheldSubstrateMeter-Soil_Coco_CompostpHandEC.jpg?v=1793876988","url":"https:\/\/www.onestopgrowshop.co.uk\/products\/aqua-master-h600-pro-substrate-meter","provider":"One Stop Grow Shop","version":"1.0","type":"link"}