{"product_id":"aqua-master-tools-e50-pro2-ec-temperature-meter","title":"Aqua Master Tools E50 Pro2 EC \u0026 Temperature Meter","description":"\u003ch2\u003eE50 Pro2 EC Meter Pen with Temperature\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eAqua Master Tools E50 Pro2\u003c\/strong\u003e is a waterproof EC meter pen that shows how strong your nutrient solution is, along with its temperature. It's the updated version of the E50 Pro, now with AAA batteries, a clearer display and a calibration reminder.\u003c\/p\u003e\n\u003cp\u003eEC (electrical conductivity) measures how much dissolved fertiliser is in your water. The more nutrient salts in solution, the higher the reading. Feed charts give a target EC for each stage of growth, and this meter tells you whether the mix in your tank matches it.\u003c\/p\u003e\n\u003cp\u003eGetting the strength right matters in both directions. Too weak and plants run short of nutrients. Too strong and roots struggle to take up water, which often shows first as burnt leaf tips. Measuring each mix takes the guesswork out of feeding.\u003c\/p\u003e\n\u003cp\u003eIt's also worth measuring your tap water before you add anything. UK tap water varies a lot from area to area, and its starting EC is part of the total your plants see.\u003c\/p\u003e\n\u003cp\u003eChecking the reservoir over a few days tells you how your plants are feeding. If EC rises, they're taking up more water than nutrients. If it falls, they're using nutrients faster than water. Either way, you'll know whether to top up with plain water or a weaker or stronger mix.\u003c\/p\u003e\n\u003cp\u003eThe E50 Pro2 reads \u003cstrong\u003e0.00 to 19.99 mS\/cm to ±2%\u003c\/strong\u003e, and its \u003cstrong\u003eautomatic temperature compensation\u003c\/strong\u003e keeps readings consistent from 0 to 50°C. Temperature matters here, because the same solution reads higher when it's warm.\u003c\/p\u003e\n\u003cp\u003eIt measures EC and temperature only. If you want pH as well, the \u003cstrong\u003eP110 Pro2 Combo Pen\u003c\/strong\u003e does both in one meter. If your feed chart is written in PPM rather than EC, the H600 Pro handheld meter reads both.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCalibrates with any EC calibration solution\u003c\/strong\u003e: digital manual calibration, so you can use whichever EC standard you already have\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCalibration reminder\u003c\/strong\u003e: an icon appears 30 days after your last calibration\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSelectable resolution\u003c\/strong\u003e of 0.01 or 0.1 mS\/cm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIP67 waterproof and floats\u003c\/strong\u003e: a drop in the tank costs you a rinse, not a meter\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-contrast display\u003c\/strong\u003e: white characters on black, easy to read in low light\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRuns on 2 x AAA batteries\u003c\/strong\u003e, with a battery indicator before low power affects readings\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReplaceable electrode\u003c\/strong\u003e: replace the sensor, not the whole meter, if it's ever damaged\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eAuto power-off after 8 minutes\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOne-year warranty\u003c\/strong\u003e on the meter and six months on the electrode\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eYou get\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1 x E50 Pro2 EC and temperature meter with protective cap and cap cord\u003c\/li\u003e\n\u003cli\u003e2 x AAA batteries\u003c\/li\u003e\n\u003cli\u003eUser manual\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eKeeping it accurate\u003c\/h3\u003e\n\u003cp\u003eEC electrodes are tougher than pH electrodes and don't need wet storage. They do pick up a film of nutrient salts and limescale over time, which pulls readings low.\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003eRinse the tip in clean water after every reading.\u003c\/li\u003e\n\u003cli\u003eCalibrate once a month, or when the reminder icon appears, using an EC calibration solution.\u003c\/li\u003e\n\u003cli\u003eIf readings start to wander, clean the tip gently and recalibrate before assuming a fault.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003eOrder online for delivery in plain, unbranded packaging, or use free Click \u0026amp; Collect from your local GroWell shop. If you're not sure which meter suits your setup, call or message the team and we'll talk it through.\u003c\/p\u003e","brand":"Aqua Master Tools","offers":[{"title":"Default Title","offer_id":59224851546486,"sku":null,"price":49.99,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0630\/9301\/4772\/files\/aquamasterp50pr2phmeter_2b679cd5-51bc-4b74-8112-ad3d1c87a4cd.jpg?v=1793874001","url":"https:\/\/www.growell.co.uk\/products\/aqua-master-tools-e50-pro2-ec-temperature-meter","provider":"GroWell","version":"1.0","type":"link"}